1 files changed, 1 insertions, 1 deletions
diff --git a/src/gui.h b/src/gui.h
index d2f3be76f..199410635 100644
--- a/src/gui.h
+++ b/src/gui.h
@@ -46,7 +46,7 @@ void ShowTrainViewWindow(const Vehicle *v);
 void ShowOrdersWindow(const Vehicle *v);
 
 /* road_gui.cpp */
-void ShowBuildRoadToolbar();
+void ShowBuildRoadToolbar(RoadType roadtype);
 void ShowBuildRoadScenToolbar();
 void ShowRoadVehViewWindow(const Vehicle *v);