--- a/src/town_cmd.cpp	Wed Jul 11 01:45:44 2007 +0000
+++ b/src/town_cmd.cpp	Wed Jul 11 02:13:00 2007 +0000
@@ -669,7 +669,7 @@
 
 static bool IsRoadAllowedHere(TileIndex tile, int dir)
 {
-	if (TileX(tile) < 1 || TileY(tile) < 1 || MapMaxX() <= TileX(tile) || MapMaxY() <= TileY(tile)) return false;
+	if (TileX(tile) < 2 || TileY(tile) < 2 || MapMaxX() <= TileX(tile) || MapMaxY() <= TileY(tile)) return false;
 
 	Slope k;
 	Slope slope;