1 files changed, 2 insertions, 2 deletions
diff --git a/src/charts/axis/barcategoryaxis/qbarcategoryaxis.h b/src/charts/axis/barcategoryaxis/qbarcategoryaxis.h
index ba8045dd..15ff9ee5 100644
--- a/src/charts/axis/barcategoryaxis/qbarcategoryaxis.h
+++ b/src/charts/axis/barcategoryaxis/qbarcategoryaxis.h
@@ -45,11 +45,11 @@ class QT_CHARTS_EXPORT QBarCategoryAxis : public QAbstractAxis
     Q_PROPERTY(int count READ count NOTIFY countChanged)
 
 public:
-    explicit QBarCategoryAxis(QObject *parent = 0);
+    explicit QBarCategoryAxis(QObject *parent = Q_NULLPTR);
     ~QBarCategoryAxis();
 
 protected:
-    QBarCategoryAxis(QBarCategoryAxisPrivate &d, QObject *parent = 0);
+    QBarCategoryAxis(QBarCategoryAxisPrivate &d, QObject *parent = Q_NULLPTR);
 
 public:
     AxisType type() const;