--- city.c.orig	Sat Jun  8 17:49:12 2002
+++ city.c	Sat Jun  8 17:59:55 2002
@@ -2060,13 +2060,14 @@
     if (!capital)
       dist = 36;
     else {
-      int tmp = map_distance(capital->x, capital->y, pcity->x, pcity->y);
-      dist = MIN(36, tmp);
+      dist = map_distance(capital->x, capital->y, pcity->x, pcity->y);
     }
-  }
-  dist =
+    dist =
       dist * g->corruption_distance_factor + g->extra_corruption_distance;
-  val = trade * dist / g->corruption_modifier;
+  }
+  val = trade * MIN(36, dist) / g->corruption_modifier;
+
+  if (val>trade) val = trade;
 
   if (city_got_building(pcity, B_COURTHOUSE) ||
       city_got_building(pcity, B_PALACE)) val /= 2;