diff --git a/src/timetable_cmd.cpp b/src/timetable_cmd.cpp
--- a/src/timetable_cmd.cpp
+++ b/src/timetable_cmd.cpp
@@ -57,7 +57,7 @@ CommandCost CmdChangeTimetable(TileIndex
 	if (!_settings_game.order.timetabling) return CMD_ERROR;
 
 	VehicleID veh = GB(p1, 0, 16);
-	if (!IsValidVehicleID(veh)) return CMD_ERROR;
+	if (!Vehicle::IsValidID(veh)) return CMD_ERROR;
 
 	Vehicle *v = Vehicle::Get(veh);
 	if (!CheckOwnership(v->owner)) return CMD_ERROR;
@@ -115,7 +115,7 @@ CommandCost CmdSetVehicleOnTime(TileInde
 	if (!_settings_game.order.timetabling) return CMD_ERROR;
 
 	VehicleID veh = GB(p1, 0, 16);
-	if (!IsValidVehicleID(veh)) return CMD_ERROR;
+	if (!Vehicle::IsValidID(veh)) return CMD_ERROR;
 
 	Vehicle *v = Vehicle::Get(veh);
 	if (!CheckOwnership(v->owner)) return CMD_ERROR;
@@ -143,7 +143,7 @@ CommandCost CmdAutofillTimetable(TileInd
 	if (!_settings_game.order.timetabling) return CMD_ERROR;
 
 	VehicleID veh = GB(p1, 0, 16);
-	if (!IsValidVehicleID(veh)) return CMD_ERROR;
+	if (!Vehicle::IsValidID(veh)) return CMD_ERROR;
 
 	Vehicle *v = Vehicle::Get(veh);
 	if (!CheckOwnership(v->owner)) return CMD_ERROR;