1 files changed, 2 insertions, 2 deletions
diff --git a/src/widgets/statemachine/qmouseeventtransition.h b/src/widgets/statemachine/qmouseeventtransition.h
index d9bac9e1a0..b4db61279d 100644
--- a/src/widgets/statemachine/qmouseeventtransition.h
+++ b/src/widgets/statemachine/qmouseeventtransition.h
@@ -49,9 +49,9 @@ class Q_WIDGETS_EXPORT QMouseEventTransition : public QEventTransition
     Q_PROPERTY(Qt::MouseButton button READ button WRITE setButton)
     Q_PROPERTY(Qt::KeyboardModifiers modifierMask READ modifierMask WRITE setModifierMask)
 public:
-    QMouseEventTransition(QState *sourceState = 0);
+    QMouseEventTransition(QState *sourceState = Q_NULLPTR);
     QMouseEventTransition(QObject *object, QEvent::Type type,
-                          Qt::MouseButton button, QState *sourceState = 0);
+                          Qt::MouseButton button, QState *sourceState = Q_NULLPTR);
     ~QMouseEventTransition();
 
     Qt::MouseButton button() const;