1 files changed, 1 insertions, 1 deletions
diff --git a/vehicle.h b/vehicle.h
index f13d6877c..94c9bcc8f 100644
--- a/vehicle.h
+++ b/vehicle.h
@@ -325,7 +325,7 @@ uint GetWaypointByTile(uint tile);
 void UpdateTrainAcceleration(Vehicle *v);
 int32 GetTrainRunningCost(Vehicle *v);
 
-int CheckTrainStoppedInDepot(Vehicle *v);
+int CheckTrainStoppedInDepot(const Vehicle *v);
 
 bool VehicleNeedsService(const Vehicle *v);