diff --git a/src/train_cmd.cpp b/src/train_cmd.cpp
index 46711c8b89..18bc085150 100644
--- a/src/train_cmd.cpp
+++ b/src/train_cmd.cpp
@@ -1419,7 +1419,7 @@ static CommandCost CmdBuildRailWagon(TileIndex tile, DoCommandFlag flags, const
 	const RailVehicleInfo *rvi = &e->u.rail;
 
 	/* Check that the wagon can drive on the track in question */
-	if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return CMD_ERROR;
+	if (!IsCompatibleRail(rvi->railtype, GetRailType(tile))) return_cmd_error(STR_ERROR_DEPOT_HAS_WRONG_RAIL_TYPE);
 
 	if (flags & DC_EXEC) {
 		Train *v = new Train();