1 files changed, 2 insertions, 2 deletions
diff --git a/src/corelib/doc/snippets/qsignalmapper/buttonwidget.h b/src/corelib/doc/snippets/qsignalmapper/buttonwidget.h
index f55683c2d5..b9d59f8dd8 100644
--- a/src/corelib/doc/snippets/qsignalmapper/buttonwidget.h
+++ b/src/corelib/doc/snippets/qsignalmapper/buttonwidget.h
@@ -51,7 +51,7 @@
 #ifndef BUTTONWIDGET_H
 #define BUTTONWIDGET_H
 
-#include <qwidget.h>
+#include <QWidget>
 
 class QSignalMapper;
 class QString;
@@ -63,7 +63,7 @@ class ButtonWidget : public QWidget
     Q_OBJECT
 
 public:
-    ButtonWidget(const QStringList &texts, QWidget *parent = 0);
+    ButtonWidget(const QStringList &texts, QWidget *parent = nullptr);
 
 signals:
     void clicked(const QString &text);