diff --git a/src/build_vehicle_gui.cpp b/src/build_vehicle_gui.cpp
--- a/src/build_vehicle_gui.cpp
+++ b/src/build_vehicle_gui.cpp
@@ -1192,7 +1192,7 @@ void ShowBuildVehicleWindow(TileIndex ti
 
 	DeleteWindowById(WC_BUILD_VEHICLE, num);
 
-	w = AllocateWindowDescFront(&_build_vehicle_desc, num, &type);
+	w = AllocateWindowDescFront<Window>(&_build_vehicle_desc, num, &type);
 
 	if (w == NULL) return;