diff --git a/src/axis/axisitem_p.h b/src/axis/axisitem_p.h
index 02386b3..1e8e006 100644
--- a/src/axis/axisitem_p.h
+++ b/src/axis/axisitem_p.h
@@ -72,10 +72,10 @@ private:
     AxisType m_type;
     QRectF m_rect;
     int m_labelsAngle;
-    QGraphicsItemGroup *m_grid;
-    QGraphicsItemGroup *m_shades;
-    QGraphicsItemGroup *m_labels;
-    QGraphicsItemGroup *m_axis;
+    QScopedPointer<QGraphicsItemGroup> m_grid;
+    QScopedPointer<QGraphicsItemGroup> m_shades;
+    QScopedPointer<QGraphicsItemGroup> m_labels;
+    QScopedPointer<QGraphicsItemGroup> m_axis;
     QVector<qreal> m_layoutVector;
     qreal m_min;
     qreal m_max;