1 files changed, 1 insertions, 1 deletions
diff --git a/examples/widgets/painting/fontsampler/mainwindow.h b/examples/widgets/painting/fontsampler/mainwindow.h
index ffb2839ffa..34e54440d4 100644
--- a/examples/widgets/painting/fontsampler/mainwindow.h
+++ b/examples/widgets/painting/fontsampler/mainwindow.h
@@ -70,7 +70,7 @@ class MainWindow : public QMainWindow, private Ui::MainWindowBase
     Q_OBJECT
 
 public:
-    MainWindow(QWidget *parent = 0);
+    MainWindow(QWidget *parent = nullptr);
 
 public slots:
     void on_clearAction_triggered();