1 files changed, 4 insertions, 2 deletions
diff --git a/src/widgets/widgets/qmainwindow.cpp b/src/widgets/widgets/qmainwindow.cpp
index 5f7cfec5af..b8472e025e 100644
--- a/src/widgets/widgets/qmainwindow.cpp
+++ b/src/widgets/widgets/qmainwindow.cpp
@@ -670,8 +670,10 @@ QWidget *QMainWindow::takeCentralWidget()
 {
     Q_D(QMainWindow);
     QWidget *oldcentralwidget = d->layout->centralWidget();
-    oldcentralwidget->setParent(0);
-    d->layout->setCentralWidget(0);
+    if (oldcentralwidget) {
+        oldcentralwidget->setParent(0);
+        d->layout->setCentralWidget(0);
+    }
     return oldcentralwidget;
 }