--- a/src/engine_func.h	Tue Dec 16 20:15:36 2008 +0000
+++ b/src/engine_func.h	Tue Dec 16 22:02:12 2008 +0000
@@ -26,6 +26,7 @@
 void DeleteCustomEngineNames();
 
 bool IsEngineBuildable(EngineID engine, VehicleType type, CompanyID company);
+bool IsEngineRefittable(EngineID engine);
 CargoID GetEngineCargoType(EngineID engine);
 void SetCachedEngineCounts();