diff --git a/src/plugins/texteditor/codeassist/genericproposalwidget.h b/src/plugins/texteditor/codeassist/genericproposalwidget.h
index 18541a8c9be..39ae7c4e292 100644
--- a/src/plugins/texteditor/codeassist/genericproposalwidget.h
+++ b/src/plugins/texteditor/codeassist/genericproposalwidget.h
@@ -73,7 +73,7 @@ private slots:
     void turnOnAutoWidth();
 
 protected:
-    bool eventFilter(QObject *o, QEvent *e);
+    bool eventFilter(QObject *o, QEvent *e) override;
     bool activateCurrentProposalItem();
     GenericProposalModel *model();