diff --git a/radio/src/thirdparty/libopenui/src/mainwindow.h b/radio/src/thirdparty/libopenui/src/mainwindow.h
index 86d51e8c9..fe6cd90ba 100644
--- a/radio/src/thirdparty/libopenui/src/mainwindow.h
+++ b/radio/src/thirdparty/libopenui/src/mainwindow.h
@@ -53,7 +53,7 @@ class MainWindow: public Window {
     void run(bool trash=true);
 
   protected:
-    void emptyTrash();
+    static void emptyTrash();
     rect_t invalidatedRect;
     const char * shutdown = nullptr;
 };