--- a/disaster_cmd.c	Sun Nov 13 21:16:34 2005 +0000
+++ b/disaster_cmd.c	Mon Nov 14 08:09:57 2005 +0000
@@ -920,7 +920,7 @@
 
 				{
 					TileIndex tile = i->xy;
-					TileIndexDiff step = TileOffsByDir(Random() & 3);
+					TileIndexDiff step = TileOffsByDir(GB(Random(), 0, 2));
 
 					int count = 30;
 					do {