diff --git a/src/newgrf_config.h b/src/newgrf_config.h
--- a/src/newgrf_config.h
+++ b/src/newgrf_config.h
@@ -39,8 +39,9 @@ enum GRFStatus {
 
 /** Encountered GRF bugs */
 enum GRFBugs {
-	GBUG_VEH_LENGTH,  ///< Length of rail vehicle changes when not inside a depot
-	GBUG_VEH_REFIT,   ///< Articulated vehicles carry different cargos resp. are differently refittable than specified in purchase list
+	GBUG_VEH_LENGTH,        ///< Length of rail vehicle changes when not inside a depot
+	GBUG_VEH_REFIT,         ///< Articulated vehicles carry different cargos resp. are differently refittable than specified in purchase list
+	GBUG_VEH_POWERED_WAGON, ///< Powered wagon changed poweredness state when not inside a depot
 };
 
 /** Status of post-gameload GRF compatibility check */