diff --git a/src/economy_func.h b/src/economy_func.h
--- a/src/economy_func.h
+++ b/src/economy_func.h
@@ -29,7 +29,7 @@ int UpdateCompanyRatingAndValue(Company 
 void StartupIndustryDailyChanges(bool init_counter);
 
 Money GetTransportedGoodsIncome(uint num_pieces, uint dist, byte transit_days, CargoID cargo_type);
-uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations);
+uint MoveGoodsToStation(CargoID type, uint amount, SourceType source_type, SourceID source_id, const StationList *all_stations, Owner exclusivity = INVALID_OWNER);
 
 void PrepareUnload(Vehicle *front_v);
 void LoadUnloadStation(Station *st);