--- a/rail.h	Sun Apr 23 11:13:06 2006 +0000
+++ b/rail.h	Sun Apr 23 13:48:16 2006 +0000
@@ -480,5 +480,5 @@
  */
 void DrawCatenary(const TileInfo *ti);
 
-uint GetRailFoundation(uint tileh, TrackBits bits);
+uint GetRailFoundation(Slope tileh, TrackBits bits);
 #endif /* RAIL_H */