Index: ai/aiunit.c
===================================================================
RCS file: /home/freeciv/CVS/freeciv/ai/aiunit.c,v
retrieving revision 1.253
diff -u -r1.253 aiunit.c
--- ai/aiunit.c	2003/01/12 22:24:04	1.253
+++ ai/aiunit.c	2003/01/13 12:43:46
@@ -973,7 +973,8 @@
      
       /* ...and free foreign city waiting for us. Who would resist! */
       if (pcity && pplayers_at_war(pplayer, city_owner(pcity))
-          && is_ground_unit(punit)
+          && could_unit_move_to_tile(punit, x1, y1) != 0
+          && COULD_OCCUPY(punit)
           && !is_ocean(map_get_terrain(punit->x, punit->y))) {
         SET_BEST(99999);
         continue;