1 files changed, 1 insertions, 1 deletions
diff --git a/examples/tools/undoframework/mainwindow.cpp b/examples/tools/undoframework/mainwindow.cpp
index b4b7ee5..90b4d3f 100644
--- a/examples/tools/undoframework/mainwindow.cpp
+++ b/examples/tools/undoframework/mainwindow.cpp
@@ -48,7 +48,7 @@
 //! [0]
 MainWindow::MainWindow()
 {
-    undoStack = new QUndoStack();
+    undoStack = new QUndoStack(this);
 
     createActions();
     createMenus();