1 files changed, 1 insertions, 1 deletions
diff --git a/src/datavisualization/data/qabstractdataproxy.h b/src/datavisualization/data/qabstractdataproxy.h
index 7493aae2..6f2d268b 100644
--- a/src/datavisualization/data/qabstractdataproxy.h
+++ b/src/datavisualization/data/qabstractdataproxy.h
@@ -53,7 +53,7 @@ public:
     };
 
 protected:
-    explicit QAbstractDataProxy(QAbstractDataProxyPrivate *d, QObject *parent = 0);
+    explicit QAbstractDataProxy(QAbstractDataProxyPrivate *d, QObject *parent = Q_NULLPTR);
 
 public:
     virtual ~QAbstractDataProxy();