diff --git a/doc/coding b/doc/coding
index cbf1a630..179a96c2 100644
--- a/doc/coding
+++ b/doc/coding
@@ -334,8 +334,6 @@ FIXME reserved names
 
 FIXME conditional compilation is a last resort
 
-FIXME s_char
-
 
 Robustness
 ----------
diff --git a/include/common.h b/include/common.h
index 1e58c910..d4d42f50 100644
--- a/include/common.h
+++ b/include/common.h
@@ -35,7 +35,7 @@
 #define COMMON_H
 
 #include <stdio.h>		/* FILE */
-#include "misc.h"		/* s_char coord natid */
+#include "misc.h"
 #include "sect.h"		/* struct sctstr */
 #include "ship.h"		/* struct shpstr */
 #include "land.h"		/* struct lndstr */
diff --git a/include/gen.h b/include/gen.h
index 3faef5bb..e8d2ede0 100644
--- a/include/gen.h
+++ b/include/gen.h
@@ -35,7 +35,7 @@
 #define GEN_H
 
 #include <stdlib.h>		/* atoi etc. */
-#include "misc.h"		/* s_char etc */
+#include "misc.h"
 #include "xy.h"			/* struct range */
 #include "prototypes.h"		/* must come at end, after defines and typedefs */
 
diff --git a/include/genitem.h b/include/genitem.h
index 8022959e..7e14d960 100644
--- a/include/genitem.h
+++ b/include/genitem.h
@@ -47,11 +47,11 @@ struct genitem {
     short uid;
     coord x;
     coord y;
-    s_char type;
-    s_char effic;
-    s_char mobil;
+    signed char type;
+    signed char effic;
+    signed char mobil;
     short tech;
-    s_char group;
+    char group;
     coord opx, opy;
     short mission;
     short radius;
diff --git a/include/ioqueue.h b/include/ioqueue.h
index d8b78bbf..515db71a 100644
--- a/include/ioqueue.h
+++ b/include/ioqueue.h
@@ -39,7 +39,7 @@ struct io {
     int size;
     int nbytes;
     int offset;
-    s_char *data;
+    char *data;
 };
 
 struct ioqueue {
diff --git a/include/land.h b/include/land.h
index beb5d4df..02cd94b4 100644
--- a/include/land.h
+++ b/include/land.h
@@ -54,18 +54,18 @@ struct lndstr {
     short lnd_uid;		/* unit id (land unit) */
     coord lnd_x;		/* x location in abs coords */
     coord lnd_y;		/* y location in abs coords */
-    s_char lnd_type;		/* index in lchr[] */
-    s_char lnd_effic;		/* 0% to 100% */
-    s_char lnd_mobil;		/* mobility units made int for RS/6000 */
+    signed char lnd_type;	/* index in lchr[] */
+    signed char lnd_effic;	/* 0% to 100% */
+    signed char lnd_mobil;	/* mobility units */
     short lnd_tech;		/* tech level ship was built at */
-    s_char lnd_army;		/* group membership */
+    char lnd_army;		/* group membership */
     coord lnd_opx, lnd_opy;	/* Op sector coords */
     short lnd_mission;		/* mission code */
     short lnd_radius;		/* mission radius */
     /* end of part matching struct genitem */
-    s_char lnd_flags;		/* unit flags (unused) */
+    signed char lnd_flags;	/* unit flags (unused) */
     short lnd_ship;		/* pointer to transporting ship */
-    s_char lnd_harden;		/* for missiles */
+    signed char lnd_harden;	/* fortification */
     short lnd_retreat;		/* retreat percentage */
     unsigned char lnd_fuel;	/* How much fuel do we have */
     unsigned char lnd_nxlight;	/* How many xlight planes on board? */
diff --git a/include/loan.h b/include/loan.h
index f2e2ff01..60949b4f 100644
--- a/include/loan.h
+++ b/include/loan.h
@@ -42,7 +42,7 @@ struct lonstr {
     natid l_loner;		/* loan shark */
     short l_uid;
     natid l_lonee;		/* sucker */
-    s_char l_status;		/* loan status */
+    signed char l_status;	/* loan status */
     short l_sell;		/* pointer to trade file (unused) */
     int l_irate;		/* interest rate */
     int l_ldur;			/* intended duration */
diff --git a/include/map.h b/include/map.h
index 249b8339..386eee12 100644
--- a/include/map.h
+++ b/include/map.h
@@ -41,7 +41,7 @@
 
 extern void blankfill(char *, struct range *, int);
 /* src/lib/subs/border.c */
-extern int map_set(natid, coord, coord, s_char, int);
+extern int map_set(natid, coord, coord, char, int);
 extern void writebmap(natid);
 extern void writemap(natid);
 /* src/lib/subs/border.c */
diff --git a/include/misc.h b/include/misc.h
index d476f4d1..f3603ce6 100644
--- a/include/misc.h
+++ b/include/misc.h
@@ -87,16 +87,6 @@ struct mob_acc_globals {
 
 typedef unsigned char natid;	/* NSC_NATID must match this */
 
-/*
- * TODO s_char has to go.  Use plain char for characters and strings,
- * signed char for small integers.
- */
-#ifdef __CHAR_UNSIGNED__
-typedef signed char s_char;
-#else
-typedef char s_char;
-#endif
-
 typedef short coord;
 
 #ifndef bit
diff --git a/include/nat.h b/include/nat.h
index ea65cb77..7e6367ac 100644
--- a/include/nat.h
+++ b/include/nat.h
@@ -98,8 +98,8 @@ struct natstr {
     char nat_userid[32];	/* userid of last user, may be empty */
     coord nat_xcap, nat_ycap;	/* cap location in abs coords */
     coord nat_xorg, nat_yorg;	/* origin location in abs coords */
-    s_char nat_dayno;		/* day of the year mod 128 */
-    s_char nat_update;		/* Want an update or not. */
+    signed char nat_dayno;	/* day of the year mod 128 */
+    signed char nat_update;	/* Want an update or not. */
     unsigned char nat_missed;	/* How many updates missed */
     unsigned short nat_tgms;	/* # of telegrams to be announced */
     unsigned short nat_ann;	/* # of annos pending */
@@ -115,7 +115,7 @@ struct natstr {
     short nat_relate[MAXNOC];
     unsigned char nat_contact[MAXNOC];
     short nat_rejects[(MAXNOC + 3) / 4]; /* four bits for each country */
-    s_char nat_priorities[PRI_MAX+1]; /* budget priority */
+    signed char nat_priorities[PRI_MAX+1]; /* budget priority */
     long nat_flags;		/* nation flags */
     char nat_spare[15];
 };
diff --git a/include/news.h b/include/news.h
index 313290d5..2ad1df3b 100644
--- a/include/news.h
+++ b/include/news.h
@@ -47,9 +47,9 @@ struct nwsstr {
     short ef_type;
     natid nws_ano;		/* "actor" country # */
     short nws_uid;		/* unused */
-    s_char nws_vrb;		/* action (verb) */
+    signed char nws_vrb;	/* action (verb) */
     natid nws_vno;		/* "victim" country # */
-    s_char nws_ntm;		/* number of times */
+    signed char nws_ntm;	/* number of times */
     time_t nws_when;		/* time of action */
 };
 
diff --git a/include/nuke.h b/include/nuke.h
index 6115e9f2..054c3480 100644
--- a/include/nuke.h
+++ b/include/nuke.h
@@ -45,7 +45,7 @@ struct nukstr {
     coord nuk_x;		/* current loc of device */
     coord nuk_y;
     /* end of part matching struct genitem */
-    s_char nuk_n;		/* number of nukes in list */
+    signed char nuk_n;		/* number of nukes in list */
     short nuk_ship;		/* currently aboard ship (unused) */
     short nuk_trade;		/* index into trade file (unused) */
     short nuk_types[N_MAXNUKE];	/* # of nukes in sector of given type */
diff --git a/include/plane.h b/include/plane.h
index 3f556c33..5b573afa 100644
--- a/include/plane.h
+++ b/include/plane.h
@@ -53,11 +53,11 @@ struct plnstr {
     short pln_uid;		/* plane unit id */
     coord pln_x;		/* plane x-y */
     coord pln_y;
-    s_char pln_type;		/* index in plchr[] */
-    s_char pln_effic;		/* actually "training" */
-    s_char pln_mobil;		/* plane mobility */
+    signed char pln_type;	/* index in plchr[] */
+    signed char pln_effic;	/* actually "training" */
+    signed char pln_mobil;	/* plane mobility */
     short pln_tech;		/* plane's tech level */
-    s_char pln_wing;		/* like fleet */
+    char pln_wing;		/* like fleet */
     coord pln_opx;		/* Op sector coords */
     coord pln_opy;		/* Op sector coords */
     short pln_mission;		/* mission code */
@@ -72,9 +72,9 @@ struct plnstr {
     int pln_acc;
     int pln_load;
     int pln_fuel;		/* (unused) */
-    s_char pln_harden;		/* for missiles */
-    s_char pln_nuketype;	/* type of nuclear armament (if any) */
-    s_char pln_flags;		/* State of the plane */
+    signed char pln_harden;	/* for missiles */
+    signed char pln_nuketype;	/* type of nuclear armament (if any) */
+    signed char pln_flags;	/* State of the plane */
     time_t pln_access;		/* Last time mob was updated (MOB_ACCESS) */
     time_t pln_timestamp;	/* Last time this plane was touched */
     float pln_theta;		/* position in orbital sine wave */
diff --git a/include/prototypes.h b/include/prototypes.h
index 97559e7e..f78a3b81 100644
--- a/include/prototypes.h
+++ b/include/prototypes.h
@@ -309,8 +309,8 @@ extern void loginit(char *);
 extern void logerror(char *, ...) ATTRIBUTE((format (printf, 1, 2)));
 /* more in misc.h */
 /* maps.c */
-extern int draw_map(int, s_char, int, struct nstr_sect *);
-extern int unit_map(int, int, struct nstr_sect *, s_char *);
+extern int draw_map(int, char, int, struct nstr_sect *);
+extern int unit_map(int, int, struct nstr_sect *, char *);
 extern int bmaps_intersect(natid, natid);
 extern int share_bmap(natid, natid, struct nstr_sect *, char, char *);
 /* move.c */
@@ -340,7 +340,7 @@ extern void snxtitem_area(struct nstr_item *, int,
 extern void snxtitem_dist(struct nstr_item *, int, int, int, int);
 extern void snxtitem_xy(struct nstr_item *, int, coord, coord);
 extern void snxtitem_all(struct nstr_item *, int);
-extern void snxtitem_group(struct nstr_item *, int, s_char);
+extern void snxtitem_group(struct nstr_item *, int, char);
 extern void snxtitem_rewind(struct nstr_item *);
 extern int snxtitem_list(struct nstr_item *, int, int *, int);
 /* snxtsect_subs.c */
@@ -510,8 +510,7 @@ extern int islist(char *);
 extern char *mission_name(short);
 extern char *nameofitem(struct genitem *, int);
 extern int collateral_damage(coord, coord, int, struct emp_qelem *);
-extern int mission_pln_equip(struct plist *, struct ichrstr *, int,
-			     s_char);
+extern int mission_pln_equip(struct plist *, struct ichrstr *, int, char);
 extern int ground_interdict(coord, coord, natid, char *);
 extern int unit_interdict(coord, coord, natid, char *, int, int);
 extern int off_support(coord, coord, natid, natid);
@@ -589,7 +588,7 @@ extern void count_land_planes(struct lndstr *);
 extern int count_sect_planes(struct sctstr *);
 extern int put_plane_on_land(struct plnstr *, struct lndstr *);
 extern int pln_hitchance(struct plnstr *, int, int);
-extern int pln_damage(struct plnstr *, coord, coord, s_char, int *, int);
+extern int pln_damage(struct plnstr *, coord, coord, char, int *, int);
 extern int pln_identchance(struct plnstr *, int, int);
 extern void pln_set_tech(struct plnstr *, int);
 /* pr.c */
diff --git a/include/ship.h b/include/ship.h
index 41ba7cd5..feb6526a 100644
--- a/include/ship.h
+++ b/include/ship.h
@@ -66,11 +66,11 @@ struct shpstr {
     short shp_uid;		/* unit id (ship #) */
     coord shp_x;		/* x location in abs coords */
     coord shp_y;		/* y location in abs coords */
-    s_char shp_type;		/* index in mchr[] */
-    s_char shp_effic;		/* 0% to 100% */
-    s_char shp_mobil;		/* mobility units */
+    signed char shp_type;	/* index in mchr[] */
+    signed char shp_effic;	/* 0% to 100% */
+    signed char shp_mobil;	/* mobility units */
     short shp_tech;		/* tech level ship was built at */
-    s_char shp_fleet;		/* group membership */
+    char shp_fleet;		/* group membership */
     coord shp_opx, shp_opy;	/* Op sector coords */
     short shp_mission;		/* mission code */
     short shp_radius;		/* mission radius */
@@ -117,7 +117,7 @@ struct fltelemstr {
 
 struct fltheadstr {
     int leader;
-    s_char real_q;
+    signed char real_q;
 /* defines for the real_q member */
 #define	LEADER_VIRTUAL	0
 #define	LEADER_REAL	1
diff --git a/include/tel.h b/include/tel.h
index 4b090603..130210d8 100644
--- a/include/tel.h
+++ b/include/tel.h
@@ -46,7 +46,7 @@
 
 struct telstr {
     natid tel_from;		/* sender */
-    s_char tel_type;
+    signed char tel_type;
     long tel_length;		/* how long */
     time_t tel_date;		/* when sent */
 };
diff --git a/include/treaty.h b/include/treaty.h
index da5be58e..d5fc5997 100644
--- a/include/treaty.h
+++ b/include/treaty.h
@@ -39,8 +39,8 @@ struct trtstr {
     natid trt_cna;		/* proposer */
     short trt_uid;
     natid trt_cnb;		/* acceptor */
-    s_char trt_status;		/* treaty status */
-    s_char trt_fill;
+    signed char trt_status;	/* treaty status */
+    char trt_fill;
     short trt_acond;		/* conditions for proposer */
     short trt_bcond;		/* conditions for accepter */
     float trt_bond;		/* amount of bond involved (unused) */
diff --git a/src/lib/commands/cens.c b/src/lib/commands/cens.c
index b0f61b31..5366f6cc 100644
--- a/src/lib/commands/cens.c
+++ b/src/lib/commands/cens.c
@@ -47,7 +47,7 @@ cens(void)
     int nsect;
     int n;
     struct nstr_sect nstr;
-    s_char dirstr[20];
+    char dirstr[20];
 
     if (!snxtsct(&nstr, player->argp[1]))
 	return RET_SYN;
diff --git a/src/lib/commands/cons.c b/src/lib/commands/cons.c
index f20e8e89..7ed3ae73 100644
--- a/src/lib/commands/cons.c
+++ b/src/lib/commands/cons.c
@@ -56,7 +56,7 @@ struct ltcomstr {
     natid proposer;		/* country offering */
     natid proposee;		/* country offered to */
     natid mailee;		/* who gets mail about it */
-    s_char op;			/* 'a', 'd', or 'p' */
+    char op;			/* 'a', 'd', or 'p' */
     union {
 	struct lonstr l;	/* the loan */
 	struct trtstr t;	/* the treaty */
diff --git a/src/lib/commands/map.c b/src/lib/commands/map.c
index 7f0505b4..71977fe1 100644
--- a/src/lib/commands/map.c
+++ b/src/lib/commands/map.c
@@ -53,7 +53,7 @@ map(void)
     int unit_type = 0;
     int bmap = 0;
     struct nstr_sect ns;
-    s_char origin = '\0';
+    char origin = '\0';
     int map_flags = 0;
 
     if (**player->argp != 'm') {
diff --git a/src/lib/commands/marc.c b/src/lib/commands/marc.c
index 41bc9fc8..25934c66 100644
--- a/src/lib/commands/marc.c
+++ b/src/lib/commands/marc.c
@@ -57,7 +57,7 @@ march(void)
     char *cp = 0;
     struct lndstr *lnd = 0;	/* leader */
     struct nstr_sect ns;
-    s_char origin;
+    char origin;
     int dir;
     int stopping = 0;
     int skip = 0;
diff --git a/src/lib/commands/navi.c b/src/lib/commands/navi.c
index ad7de063..68785283 100644
--- a/src/lib/commands/navi.c
+++ b/src/lib/commands/navi.c
@@ -59,7 +59,7 @@ navi(void)
     char *cp = 0;
     struct shpstr *shp = 0;	/* flagship */
     struct nstr_sect ns;
-    s_char origin;
+    char origin;
     int dir;
     int stopping = 0;
     int skip = 0;
diff --git a/src/lib/commands/shar.c b/src/lib/commands/shar.c
index 9cabbaa8..89845484 100644
--- a/src/lib/commands/shar.c
+++ b/src/lib/commands/shar.c
@@ -45,7 +45,7 @@ shar(void)
 {
     int to;
     struct nstr_sect ns;
-    s_char des = 0;
+    char des = 0;
     int n;
 
     to = natarg(player->argp[1], "Share bmap with which country? ");
diff --git a/src/lib/common/maps.c b/src/lib/common/maps.c
index b19640dc..796c642f 100644
--- a/src/lib/common/maps.c
+++ b/src/lib/common/maps.c
@@ -54,7 +54,7 @@ static int bmnxtsct(struct nstr_sect *);
 static char map_char(unsigned char type, natid own, int owner_or_god);
 
 int
-draw_map(int bmap, s_char origin, int map_flags, struct nstr_sect *nsp)
+draw_map(int bmap, char origin, int map_flags, struct nstr_sect *nsp)
 {
     struct natstr *np;
     struct range range;
@@ -302,7 +302,7 @@ map_char(unsigned char type, natid own, int owner_or_god)
 }
 
 int
-unit_map(int unit_type, int uid, struct nstr_sect *nsp, s_char *originp)
+unit_map(int unit_type, int uid, struct nstr_sect *nsp, char *originp)
 {
     struct shpstr origs;
     struct lndstr origl;
@@ -339,8 +339,8 @@ unit_map(int unit_type, int uid, struct nstr_sect *nsp, s_char *originp)
 int
 bmaps_intersect(natid a, natid b)
 {
-    s_char *mapa = ef_ptr(EF_MAP, a);
-    s_char *mapb = ef_ptr(EF_MAP, b);
+    char *mapa = ef_ptr(EF_MAP, a);
+    char *mapb = ef_ptr(EF_MAP, b);
     int i;
 
     for (i = 0; i < WORLD_X * WORLD_Y / 2; ++i, ++mapa, ++mapb)
diff --git a/src/lib/gen/io.c b/src/lib/gen/io.c
index fabeb997..76fd1025 100644
--- a/src/lib/gen/io.c
+++ b/src/lib/gen/io.c
@@ -194,7 +194,7 @@ io_output(struct iop *iop, int waitforoutput)
 #if !defined(_WIN32)
     struct iovec iov[16];
 #else
-    s_char buf[IO_BUFSIZE];
+    char buf[IO_BUFSIZE];
 #endif
     int cc;
     int n;
diff --git a/src/lib/gen/ioqueue.c b/src/lib/gen/ioqueue.c
index 78d02393..adb96010 100644
--- a/src/lib/gen/ioqueue.c
+++ b/src/lib/gen/ioqueue.c
@@ -225,9 +225,9 @@ ioqtobuf(struct ioqueue *ioq, char *buf, int cc)
 static int
 ioqtocbuf(struct ioqueue *ioq, char *buf, int cc, register int stopc)
 {
-    register int nbytes;
-    register s_char *p;
-    register int n;
+    int nbytes;
+    char *p;
+    int n;
     struct io *io;
     struct emp_qelem *qp;
     struct emp_qelem *head;
@@ -298,7 +298,7 @@ appendcc(struct ioqueue *ioq, char *buf, int cc)
 {
     struct io *io;
     int len;
-    s_char *ptr;
+    char *ptr;
     int avail;
 
     /* determine if any space is left */
@@ -389,7 +389,7 @@ ioq_makebuf(struct ioqueue *ioq, char *pBuf, int nBufLen)
     int nbytes;
     int nleft;
     int ncopied;
-    s_char *offset;
+    char *offset;
 
     ncopied = 0;
     nleft = nBufLen;
diff --git a/src/lib/subs/aircombat.c b/src/lib/subs/aircombat.c
index aeff1584..c47fd354 100644
--- a/src/lib/subs/aircombat.c
+++ b/src/lib/subs/aircombat.c
@@ -702,7 +702,6 @@ ac_planedamage(struct plist *plp, natid from, int dam, natid other,
     int eff;
     struct shpstr ship;
     struct lndstr land;
-    /* s_char *sprintf();           already in misc.h [JFW] */
     natid plane_owner;
 
     disp = 0;
diff --git a/src/lib/subs/attsub.c b/src/lib/subs/attsub.c
index 29f39059..5ef75ca5 100644
--- a/src/lib/subs/attsub.c
+++ b/src/lib/subs/attsub.c
@@ -58,7 +58,7 @@
 
 static void ask_olist(int combat_mode, struct combat *off,
 		      struct combat *def, struct emp_qelem *olist,
-		      s_char *land_answer, int *a_spyp, int *a_engineerp);
+		      char *land_answer, int *a_spyp, int *a_engineerp);
 static void take_move_in_mob(int combat_mode, struct llist *llp,
 			     struct combat *off, struct combat *def);
 static void move_in_land(int combat_mode, struct combat *off,
@@ -382,7 +382,7 @@ put_combat(struct combat *com)
 	    if (com->mob - com->mobcost < -127)
 		land.lnd_mobil = -127;
 	    else
-		land.lnd_mobil = (s_char)(com->mob - com->mobcost);
+		land.lnd_mobil = (signed char)(com->mob - com->mobcost);
 	}
 	makelost(EF_LAND, land.lnd_own, land.lnd_uid, land.lnd_x,
 		 land.lnd_y);
@@ -410,7 +410,7 @@ put_combat(struct combat *com)
 	    if (com->mob - com->mobcost < -127)
 		ship.shp_mobil = -127;
 	    else
-		ship.shp_mobil = (s_char)(com->mob - com->mobcost);
+		ship.shp_mobil = (signed char)(com->mob - com->mobcost);
 	}
 	makelost(EF_SHIP, ship.shp_own, ship.shp_uid, ship.shp_x,
 		 ship.shp_y);
@@ -766,7 +766,7 @@ att_ask_offense(int combat_mode, struct combat *off, struct combat *def,
 		struct emp_qelem *olist, int *a_spyp, int *a_engineerp)
 {
     int n;
-    s_char land_answer[1024];
+    char land_answer[1024];
 
     emp_initque(olist);
     if (att_abort(combat_mode, off, def))
@@ -947,7 +947,7 @@ att_prompt(char *prompt, char army)
 
 static void
 ask_olist(int combat_mode, struct combat *off, struct combat *def,
-	  struct emp_qelem *olist, s_char *land_answer, int *a_spyp,
+	  struct emp_qelem *olist, char *land_answer, int *a_spyp,
 	  int *a_engineerp)
 {
     struct nstr_item ni;
@@ -2283,8 +2283,8 @@ ask_move_in(struct combat *off, struct emp_qelem *olist,
     struct llist *llp;
     char buf[512];
     char prompt[512];
-    s_char land_answer[1024];
-    s_char *answerp;
+    char land_answer[1024];
+    char *answerp;
 
     for (n = 0; n <= off->last; ++n)
 	if (off[n].type != EF_BAD && off[n].troops > 0)
diff --git a/src/lib/subs/bigmap.c b/src/lib/subs/bigmap.c
index 53160972..4c521186 100644
--- a/src/lib/subs/bigmap.c
+++ b/src/lib/subs/bigmap.c
@@ -45,10 +45,10 @@
  * 2 = update only bmap with force
  */
 
-static int do_map_set(s_char *map, coord x, coord y, s_char t, int force);
+static int do_map_set(char *map, coord x, coord y, char t, int force);
 
 int
-map_set(natid cnum, coord x, coord y, s_char t, int only_bmap)
+map_set(natid cnum, coord x, coord y, char t, int only_bmap)
 {
     int set = 0;
 
@@ -63,10 +63,10 @@ map_set(natid cnum, coord x, coord y, s_char t, int only_bmap)
 
 
 static int
-do_map_set(s_char *map, coord x, coord y, s_char t, int force)
+do_map_set(char *map, coord x, coord y, char t, int force)
 {
     int id;
-    s_char ot;
+    char ot;
 
     if ((id = sctoff(x, y)) < 0)
 	return 0;
diff --git a/src/lib/subs/lndsub.c b/src/lib/subs/lndsub.c
index 12d8c07b..b2c3c3a5 100644
--- a/src/lib/subs/lndsub.c
+++ b/src/lib/subs/lndsub.c
@@ -187,7 +187,7 @@ lnd_take_casualty(int combat_mode, struct llist *llp, int cas)
     int nowhere_to_go = 0;
     struct sctstr rsect;
     double mobcost;
-    s_char orig;
+    signed char orig;
     int mob;
 
     taken = lnd_getmil(&llp->land);
@@ -272,7 +272,7 @@ lnd_take_casualty(int combat_mode, struct llist *llp, int cas)
 		if (mob < -127)
 		    mob = -127;
 		orig = llp->land.lnd_mobil;
-		llp->land.lnd_mobil = (s_char)mob;
+		llp->land.lnd_mobil = (signed char)mob;
 		if (llp->land.lnd_mobil > orig)
 		    llp->land.lnd_mobil = -127;
 		sprintf(buf, "retreats at %d%% efficiency to %s!",
@@ -326,7 +326,7 @@ lnd_takemob(struct emp_qelem *list, double loss)
 	new = llp->land.lnd_mobil - mcost;
 	if (new < -127)
 	    new = -127;
-	llp->land.lnd_mobil = (s_char)new;
+	llp->land.lnd_mobil = (signed char)new;
     }
 }
 int
diff --git a/src/lib/subs/mission.c b/src/lib/subs/mission.c
index 4555f257..a792415b 100644
--- a/src/lib/subs/mission.c
+++ b/src/lib/subs/mission.c
@@ -1219,7 +1219,7 @@ mission_pln_arm(struct emp_qelem *list, coord x, coord y, int dist,
 
 int
 mission_pln_equip(struct plist *plp, struct ichrstr *ip, int flags,
-		  s_char mission)
+		  char mission)
 {
     struct plchrstr *pcp;
     struct plnstr *pp;
diff --git a/src/lib/subs/plnsub.c b/src/lib/subs/plnsub.c
index 0248f032..1f68ac78 100644
--- a/src/lib/subs/plnsub.c
+++ b/src/lib/subs/plnsub.c
@@ -52,7 +52,7 @@
 #include "prototypes.h"
 #include "optlist.h"
 
-static int pln_equip(struct plist *, struct ichrstr *, int, s_char);
+static int pln_equip(struct plist *, struct ichrstr *, int, char);
 
 /*
  * Get assembly point argument.
@@ -605,7 +605,7 @@ pln_arm(struct emp_qelem *list, int dist, int mission, struct ichrstr *ip,
 }
 
 static int
-pln_equip(struct plist *plp, struct ichrstr *ip, int flags, s_char mission)
+pln_equip(struct plist *plp, struct ichrstr *ip, int flags, char mission)
 {
     struct plchrstr *pcp;
     struct plnstr *pp;
@@ -1159,7 +1159,7 @@ pln_hitchance(struct plnstr *pp, int hardtarget, int type)
 /* return 0 if there was a nuclear detonation */
 
 int
-pln_damage(struct plnstr *pp, coord x, coord y, s_char type, int *nukedamp,
+pln_damage(struct plnstr *pp, coord x, coord y, char type, int *nukedamp,
 	   int noisy)
 {
     struct plchrstr *pcp = plchr + pp->pln_type;
diff --git a/src/lib/subs/radmap.c b/src/lib/subs/radmap.c
index d353f17b..516c2386 100644
--- a/src/lib/subs/radmap.c
+++ b/src/lib/subs/radmap.c
@@ -70,8 +70,8 @@ radmapupd(int own, int cx, int cy, int eff, int range, double seesub)
  * want to do this in other places too where it doesn't matter. */
 static char **rad;
 static char *radbuf;
-static s_char **vis;
-static s_char *visbuf;
+static signed char **vis;
+static signed char *visbuf;
 
 static void
 radmap2(int owner,
@@ -100,7 +100,7 @@ radmap2(int owner,
 	}
     }
     if (!vis) {
-	vis = malloc(WORLD_Y * sizeof(s_char *));
+	vis = malloc(WORLD_Y * sizeof(signed char *));
 	if (vis && visbuf) {
 	    for (x = 0; x < WORLD_Y; x++)
 		vis[x] = &visbuf[(WORLD_X + 1) * x];
diff --git a/src/lib/subs/satmap.c b/src/lib/subs/satmap.c
index 1191c0f5..06bfde29 100644
--- a/src/lib/subs/satmap.c
+++ b/src/lib/subs/satmap.c
@@ -64,7 +64,7 @@ satmap(int x, int y, int eff, int range, int flags, int type)
     int n;
     int changed = 0;
     long crackle;
-    s_char noise[100];
+    signed char noise[100];
     char selection[1024];
 
     if (!eff)
diff --git a/src/lib/subs/shpsub.c b/src/lib/subs/shpsub.c
index 710e482d..698ef848 100644
--- a/src/lib/subs/shpsub.c
+++ b/src/lib/subs/shpsub.c
@@ -636,7 +636,7 @@ shp_fort_interdiction(struct emp_qelem *list, coord newx, coord newy,
     int shell, gun;
     int dam;
     int totdam = 0;
-    s_char notified[MAXNOC];
+    signed char notified[MAXNOC];
     int i;
 
     /* Inform neutral and worse */
diff --git a/src/lib/subs/snxtitem.c b/src/lib/subs/snxtitem.c
index e88ff773..992a01ce 100644
--- a/src/lib/subs/snxtitem.c
+++ b/src/lib/subs/snxtitem.c
@@ -192,7 +192,7 @@ snxtitem_all(struct nstr_item *np, int type)
 }
 
 void
-snxtitem_group(struct nstr_item *np, int type, s_char group)
+snxtitem_group(struct nstr_item *np, int type, char group)
 {
     if (group == '~')
 	group = ' ';
diff --git a/src/lib/update/land.c b/src/lib/update/land.c
index 64af50b7..ff328c41 100644
--- a/src/lib/update/land.c
+++ b/src/lib/update/land.c
@@ -340,7 +340,7 @@ landrepair(struct lndstr *land, struct natstr *np,
 	logerror("land unit %d building %d ! \n", land->lnd_uid, build);
     np->nat_money -= mult * lp->l_cost * build / 100.0;
     if (!player->simulation) {
-	land->lnd_effic += (s_char)build;
+	land->lnd_effic += (signed char)build;
 
 	putsect(sp);
     }
diff --git a/src/lib/update/mobility.c b/src/lib/update/mobility.c
index bdeed553..62c52605 100644
--- a/src/lib/update/mobility.c
+++ b/src/lib/update/mobility.c
@@ -310,7 +310,7 @@ do_mob_ship(struct shpstr *sp, int etus)
 	value = sp->shp_mobil + ((float)etus * ship_mob_scale);
 	if (value > ship_mob_max)
 	    value = ship_mob_max;
-	sp->shp_mobil = (s_char)value;
+	sp->shp_mobil = (signed char)value;
     } else {
 	can_add = ship_mob_max - sp->shp_mobil;
 	if (can_add > ((float)etus * ship_mob_scale))
diff --git a/src/lib/update/plane.c b/src/lib/update/plane.c
index ae414833..520256b6 100644
--- a/src/lib/update/plane.c
+++ b/src/lib/update/plane.c
@@ -257,7 +257,7 @@ prod_plane(int etus, int natnum, int *bp, int buildem)
 	    air_money[pp->pln_own] += np->nat_money - start_money;
 
 	    if (!player->simulation)
-		pp->pln_effic += (s_char)build;
+		pp->pln_effic += (signed char)build;
 	    else
 		np->nat_money = start_money;
 	    k++;
diff --git a/src/scripts/indent-emp b/src/scripts/indent-emp
index 0b3b5302..6ee55730 100755
--- a/src/scripts/indent-emp
+++ b/src/scripts/indent-emp
@@ -2,7 +2,7 @@
 
 # indent needs to know type names do to a proper job.
 # Type names located with grep typedef, then extracted by hand:
-types="coord empth_sem_t empth_t i_packing i_type loc_Sem_t loc_Thread_t natid ns_seltype nsc_cat nsc_flags nsc_type packed_nsc_cat packed_nsc_type s_char stkalign_t"
+types="coord empth_sem_t empth_t i_packing i_type loc_Sem_t loc_Thread_t natid ns_seltype nsc_cat nsc_flags nsc_type packed_nsc_cat packed_nsc_type stkalign_t"
 
 opts="-kr -cdw -cp8 -ncs -psl -ss"
 for t in $types
diff --git a/src/server/update.c b/src/server/update.c
index d82bbc30..e6b12467 100644
--- a/src/server/update.c
+++ b/src/server/update.c
@@ -159,7 +159,7 @@ update_wait(void *unused)
 	}
 	stacksize = 100000 +
 /* finish_sects */ WORLD_X * WORLD_Y * (2 * sizeof(double) +
-					sizeof(s_char *));
+					sizeof(char *));
 
 	empth_create(PP_UPDATE, update_main, stacksize, 0,
 		     "UpdateRun", "Updates the world", dp);