2 files changed, 3 insertions, 2 deletions
diff --git a/examples/widgets/widgets/icons/mainwindow.cpp b/examples/widgets/widgets/icons/mainwindow.cpp
index f704b8306f..904245494c 100644
--- a/examples/widgets/widgets/icons/mainwindow.cpp
+++ b/examples/widgets/widgets/icons/mainwindow.cpp
@@ -60,7 +60,8 @@ enum { OtherSize = QStyle::PM_CustomBase };
 //! [40]
 
 //! [0]
-MainWindow::MainWindow()
+MainWindow::MainWindow(QWidget *parent)
+    : QMainWindow(parent)
 {
     QWidget *centralWidget = new QWidget(this);
     setCentralWidget(centralWidget);
diff --git a/examples/widgets/widgets/icons/mainwindow.h b/examples/widgets/widgets/icons/mainwindow.h
index e3888e5fb1..1949bd235c 100644
--- a/examples/widgets/widgets/icons/mainwindow.h
+++ b/examples/widgets/widgets/icons/mainwindow.h
@@ -74,7 +74,7 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow();
+    MainWindow(QWidget *parent = nullptr);
 
     void loadImages(const QStringList &fileNames);