diff --git a/src/order_base.h b/src/order_base.h
--- a/src/order_base.h
+++ b/src/order_base.h
@@ -84,10 +84,11 @@ public:
 	 * Makes this order a Go To Depot order.
 	 * @param destination the depot to go to.
 	 * @param order       is this order a 'default' order, or an overriden vehicle order?
+	 * @param action      what to do in the depot?
 	 * @param cargo       the cargo type to change to.
 	 * @param subtype     the subtype to change to.
 	 */
-	void MakeGoToDepot(DepotID destination, OrderDepotTypeFlags order, CargoID cargo = CT_NO_REFIT, byte subtype = 0);
+	void MakeGoToDepot(DepotID destination, OrderDepotTypeFlags order, OrderDepotActionFlags action = ODATF_SERVICE_ONLY, CargoID cargo = CT_NO_REFIT, byte subtype = 0);
 
 	/**
 	 * Makes this order a Go To Waypoint order.