diff --git a/src/roadveh_cmd.cpp b/src/roadveh_cmd.cpp
--- a/src/roadveh_cmd.cpp
+++ b/src/roadveh_cmd.cpp
@@ -437,7 +437,7 @@ CommandCost CmdTurnRoadVeh(TileIndex til
 
 void RoadVehicle::MarkDirty()
 {
-	for (Vehicle *v = this; v != NULL; v = v->Next()) {
+	for (RoadVehicle *v = this; v != NULL; v = v->Next()) {
 		v->UpdateViewport(false, false);
 	}
 	this->CargoChanged();