diff --git a/src/station_gui.cpp b/src/station_gui.cpp
index 0644d0a2c1..d6ed301352 100644
--- a/src/station_gui.cpp
+++ b/src/station_gui.cpp
@@ -668,7 +668,7 @@ public:
 		}
 	}
 
-	void OnDropdownSelect(int widget, int index) override
+	void OnDropdownSelect(WidgetID widget, int index) override
 	{
 		if (widget == WID_STL_SORTDROPBTN) {
 			if (this->stations.SortType() != index) {