diff --git a/src/qtviewer/mainwindow.h b/src/qtviewer/mainwindow.h
index bad918cc8e..2a5250ce3a 100644
--- a/src/qtviewer/mainwindow.h
+++ b/src/qtviewer/mainwindow.h
@@ -33,7 +33,6 @@ public Q_SLOTS:
 
 public slots:
     void openFile(const QString &path = QString());
-    void setRenderer(QAction *action);
 
 private:
     QAction *m_nativeAction;