diff --git a/oscar/daily.h b/oscar/daily.h
index 35e9d4cb..94aad87a 100644
--- a/oscar/daily.h
+++ b/oscar/daily.h
@@ -304,6 +304,8 @@ private:
         */
     void UpdateEventsTree(QTreeWidget * tree,Day *day);
 
+    virtual bool eventFilter(QObject *object, QEvent *event) override;
+
     void updateCube();