diff --git a/src/plugins/coreplugin/mainwindow.cpp b/src/plugins/coreplugin/mainwindow.cpp
index 26d31844ffc..e28821914f3 100644
--- a/src/plugins/coreplugin/mainwindow.cpp
+++ b/src/plugins/coreplugin/mainwindow.cpp
@@ -306,9 +306,6 @@ MainWindow::~MainWindow()
     m_helpManager = 0;
     delete m_variableManager;
     m_variableManager = 0;
-
-    delete m_navigationWidget;
-    m_navigationWidget = 0;
 }
 
 bool MainWindow::init(QString *errorMessage)