--- settlers.c	Sun Oct 29 23:07:53 2000
+++ settlers_patch.c	Mon Oct 30 17:21:59 2000
@@ -1090,7 +1090,9 @@
 				/* pretty good, hope it's enough! -- Syela */
             && (near < 8 || map_get_continent(x, y) != ucont)
 	    && city_can_be_built_here(x,y)
-	    && !city_exists_within_city_radius(x,y)) {
+	    && !city_exists_within_city_radius(x,y)
+                                /* AI is not a cheat -- Vicet */
+            && map_get_known(x, y, pplayer)) {
 
 	  /* potential target, calculate mv_cost: */
           if (ferryboat) {