diff --git a/src/ui/MainWindow.cc b/src/ui/MainWindow.cc
index cf5e46b73c72fa3e864fc4d6dd36ac9a5b9c2889..1017ac73bee6c0e55c3c03b725081b3ab27299a8 100644
--- a/src/ui/MainWindow.cc
+++ b/src/ui/MainWindow.cc
@@ -399,7 +399,7 @@ void MainWindow::_hideAllDockWidgets(void)
 
 void MainWindow::_showDockWidgetAction(bool show)
 {
-    QAction* action = dynamic_cast<QAction*>(QObject::sender());
+    QAction* action = qobject_cast<QAction*>(QObject::sender());
     Q_ASSERT(action);
     _showDockWidget(action->text(), show);
 }