diff --git a/include/land.h b/include/land.h
index ae6e68ef..2da78f6b 100644
--- a/include/land.h
+++ b/include/land.h
@@ -66,7 +66,6 @@ struct lndstr {
     short lnd_mission;		/* mission code */
     short lnd_radius;		/* mission radius */
     /* end of part matching struct empobj */
-    signed char lnd_flags;	/* unit flags (unused) */
     short lnd_ship;		/* pointer to transporting ship */
     signed char lnd_harden;	/* fortification */
     short lnd_retreat;		/* retreat percentage */
diff --git a/include/loan.h b/include/loan.h
index f4f900f7..f0a8416a 100644
--- a/include/loan.h
+++ b/include/loan.h
@@ -50,7 +50,6 @@ struct lonstr {
     natid l_loner;		/* loan shark */
     natid l_lonee;		/* sucker */
     signed char l_status;	/* loan status */
-    short l_sell;		/* pointer to trade file (unused) */
     int l_irate;		/* interest rate */
     int l_ldur;			/* intended duration */
     long l_amtpaid;		/* amount paid so far */
diff --git a/include/nuke.h b/include/nuke.h
index 231f0a04..ccefbe23 100644
--- a/include/nuke.h
+++ b/include/nuke.h
@@ -58,9 +58,7 @@ struct nukstr {
     short nuk_mission;		/* mission code, unused */
     short nuk_radius;		/* mission radius, unused */
     /* end of part matching struct empobj */
-    short nuk_ship;		/* currently aboard ship (unused) */
     short nuk_plane;		/* currently aboard plane */
-    short nuk_land;		/* currently aboard land (unused) */
 };
 
 struct nchrstr {
diff --git a/include/treaty.h b/include/treaty.h
index 0e164eef..bef96d59 100644
--- a/include/treaty.h
+++ b/include/treaty.h
@@ -50,7 +50,6 @@ struct trtstr {
     char trt_fill;
     short trt_acond;		/* conditions for proposer */
     short trt_bcond;		/* conditions for accepter */
-    float trt_bond;		/* amount of bond involved (unused) */
     time_t trt_exp;		/* expiration date */
 };
 
diff --git a/src/lib/commands/buil.c b/src/lib/commands/buil.c
index 03720b81..9ebe6f6e 100644
--- a/src/lib/commands/buil.c
+++ b/src/lib/commands/buil.c
@@ -458,7 +458,6 @@ build_land(struct sctstr *sp, struct lchrstr *lp, short *vec, int tlev)
     } else {
 	land.lnd_mobil = 0;
     }
-    land.lnd_flags = 0;
     land.lnd_ship = -1;
     land.lnd_land = -1;
     land.lnd_harden = 0;
@@ -652,7 +651,7 @@ build_nuke(struct sctstr *sp, struct nchrstr *np, short *vec, int tlev)
     nuke.nuk_own = sp->sct_own;
     nuke.nuk_type = np - nchr;
     nuke.nuk_effic = 100;
-    nuke.nuk_ship = nuke.nuk_plane = nuke.nuk_land = -1;
+    nuke.nuk_plane = -1;
     nuke.nuk_tech = tlev;
     unit_wipe_orders((struct empobj *)&nuke);