1 files changed, 4 insertions, 4 deletions
diff --git a/src/widgets/widgets/qdialogbuttonbox.h b/src/widgets/widgets/qdialogbuttonbox.h
index 02960b5b79..83c1fd66fd 100644
--- a/src/widgets/widgets/qdialogbuttonbox.h
+++ b/src/widgets/widgets/qdialogbuttonbox.h
@@ -106,11 +106,11 @@ public:
         GnomeLayout
     };
 
-    QDialogButtonBox(QWidget *parent = 0);
-    QDialogButtonBox(Qt::Orientation orientation, QWidget *parent = 0);
-    explicit QDialogButtonBox(StandardButtons buttons, QWidget *parent = 0);
+    QDialogButtonBox(QWidget *parent = Q_NULLPTR);
+    QDialogButtonBox(Qt::Orientation orientation, QWidget *parent = Q_NULLPTR);
+    explicit QDialogButtonBox(StandardButtons buttons, QWidget *parent = Q_NULLPTR);
     QDialogButtonBox(StandardButtons buttons, Qt::Orientation orientation,
-                     QWidget *parent = 0);
+                     QWidget *parent = Q_NULLPTR);
     ~QDialogButtonBox();
 
     void setOrientation(Qt::Orientation orientation);