--- a/src/road.h	Wed Sep 12 22:05:53 2007 +0000
+++ b/src/road.h	Wed Sep 12 23:56:21 2007 +0000
@@ -126,7 +126,7 @@
  */
 static inline RoadBits DiagDirToRoadBits(DiagDirection d)
 {
-	return (RoadBits)(1U << (3 ^ d));
+	return (RoadBits)(ROAD_NW << (3 ^ d));
 }
 
 /**