diff --git a/src/station_cmd.cpp b/src/station_cmd.cpp
--- a/src/station_cmd.cpp
+++ b/src/station_cmd.cpp
@@ -3595,7 +3595,7 @@ static CommandCost TerraformTile_Station
 		/* TODO: If you implement newgrf callback 149 'land slope check', you have to decide what to do with it here.
 		 *       TTDP does not call it.
 		 */
-		if (GetTileMaxPixelZ(tile) == z_new + GetSlopeMaxPixelZ(tileh_new)) {
+		if (GetTileMaxZ(tile) == z_new + GetSlopeMaxZ(tileh_new)) {
 			switch (GetStationType(tile)) {
 				case STATION_WAYPOINT:
 				case STATION_RAIL: {