--- settlers.c	Sun Oct 29 23:07:53 2000
+++ /tmp/settlers.c	Sun Oct 29 23:07:15 2000
@@ -956,7 +956,9 @@
 	  && warmap.cost[x][y] <= THRESHOLD * mv_rate
 	  && (territory[x][y]&(1<<player_num))
 				/* pretty good, hope it's enough! -- Syela */
-          && !is_already_assigned(punit, pplayer, x, y)) {
+          && !is_already_assigned(punit, pplayer, x, y) 
+                    /* ai is not a cheat -- Vicet */
+          && map_get_known(x, y, pplayer)) {
 	/* calling is_already_assigned once instead of four times
 	   for obvious reasons;  structure is much the same as it once
 	   was but subroutines are not -- Syela	*/