--- a/vehicle.c	Tue Feb 22 12:27:33 2005 +0000
+++ b/vehicle.c	Tue Feb 22 12:48:03 2005 +0000
@@ -98,7 +98,7 @@
 {
 	// needs z correction for slope-type graphics that have the NORTHERN tile lowered
 	// 1, 2, 3, 4, 5, 6 and 7
-	return (CORRECT_Z(tileh)) ? 8 : 0;
+	return CorrectZ(tileh) ? 8 : 0;
 }
 
 uint GetCorrectTileHeight(TileIndex tile)