diff --git a/include/land.h b/include/land.h
index 10fb3fe0..7ee2e258 100644
--- a/include/land.h
+++ b/include/land.h
@@ -71,7 +71,7 @@ struct lndstr {
     s_char lnd_rpath[RET_LEN];	/* retreat path */
     u_char lnd_rad_max;		/* max radius for this unit */
     u_char lnd_scar;		/* how experienced the unit is (not used) */
-    u_short lnd_item[I_MAX+1];	/* amount of items on board */
+    short lnd_item[I_MAX+1];	/* amount of items on board */
     u_short lnd_pstage;		/* plague stage */
     u_short lnd_ptime;		/* how many etus remain in this stage */
     short lnd_land;		/* pointer to transporting unit */
diff --git a/include/sect.h b/include/sect.h
index 5750796d..6daa05ae 100644
--- a/include/sect.h
+++ b/include/sect.h
@@ -71,9 +71,9 @@ struct sctstr {
     natid sct_oldown;		/* old owner of sector (for liberation) */
     u_char sct_updated;		/* Has this sect been updated? */
     u_char sct_off;		/* Should this sector produce? */
-    u_short sct_item[I_MAX+1];	/* amount of items stored here */
-    u_short sct_del[I_MAX+1];	/* delivieries */
-    u_short sct_dist[I_MAX+1];	/* distribution thresholds */
+    short sct_item[I_MAX+1];	/* amount of items stored here */
+    short sct_del[I_MAX+1];	/* delivieries */
+    short sct_dist[I_MAX+1];	/* distribution thresholds */
     u_short sct_mines;		/* number of mines */
     u_short sct_pstage;		/* plague stage */
     u_short sct_ptime;		/* how many etus remain in this stage */
diff --git a/include/ship.h b/include/ship.h
index 4a5c9703..1ccb8ee1 100644
--- a/include/ship.h
+++ b/include/ship.h
@@ -93,7 +93,7 @@ struct shpstr {
     short shp_lstart[TMAX];	/* How much do we pick up at the start  */
     short shp_lend[TMAX];	/* How much do we pick up at the end    */
     u_char shp_autonav;		/* autonavigation flags */
-    u_short shp_item[I_MAX+1];	/* amount of items on board */
+    short shp_item[I_MAX+1];	/* amount of items on board */
     u_short shp_pstage;		/* plague stage */
     u_short shp_ptime;		/* how many etus remain in this stage */
     time_t shp_access;		/* Last time mob was updated (MOB_ACCESS) */