diff --git a/wadsrc/static/zscript/menu/menuitembase.txt b/wadsrc/static/zscript/menu/menuitembase.txt
index 39dbb61b0f..12b13556ce 100644
--- a/wadsrc/static/zscript/menu/menuitembase.txt
+++ b/wadsrc/static/zscript/menu/menuitembase.txt
@@ -40,7 +40,7 @@ class MenuItemBase : Object native ui version("2.4")
 	double GetY() { return mYpos; }
 	double GetX() { return mXpos; }
 	void SetX(double x) { mXpos = x; }
-	void OnMenuCreated() {}
+	virtual void OnMenuCreated() {}
 }
 
 // this is only used to parse font color ranges in MENUDEF