diff -r 694a7dacd30a -r f642e46e7f6b src/tile.cpp
--- a/src/tile.cpp	Wed Jul 25 15:45:46 2007 +0000
+++ b/src/tile.cpp	Wed Jul 25 17:07:38 2007 +0000
@@ -55,7 +55,7 @@
 
 uint GetTileMaxZ(TileIndex t)
 {
-	if (TileX(tile) == MapMaxX() || TileY(tile) == MapMaxY()) return 0;
+	if (TileX(t) == MapMaxX() || TileY(t) == MapMaxY()) return 0;
 
 	uint h = TileHeight(t);
 	h = max(h, TileHeight(t + TileDiffXY(1, 0)));