5 files changed, 7 insertions, 7 deletions
diff --git a/src/datavisualization/axis/qabstract3daxis.h b/src/datavisualization/axis/qabstract3daxis.h
index 8ca1052e..63dd0340 100644
--- a/src/datavisualization/axis/qabstract3daxis.h
+++ b/src/datavisualization/axis/qabstract3daxis.h
@@ -70,7 +70,7 @@ public:
     };
 
 protected:
-    explicit QAbstract3DAxis(QAbstract3DAxisPrivate *d, QObject *parent = 0);
+    explicit QAbstract3DAxis(QAbstract3DAxisPrivate *d, QObject *parent = Q_NULLPTR);
 
 public:
     virtual ~QAbstract3DAxis();
diff --git a/src/datavisualization/axis/qcategory3daxis.h b/src/datavisualization/axis/qcategory3daxis.h
index 640de5b5..2165a4d2 100644
--- a/src/datavisualization/axis/qcategory3daxis.h
+++ b/src/datavisualization/axis/qcategory3daxis.h
@@ -42,7 +42,7 @@ class QT_DATAVISUALIZATION_EXPORT QCategory3DAxis : public QAbstract3DAxis
     Q_PROPERTY(QStringList labels READ labels WRITE setLabels NOTIFY labelsChanged)
 
 public:
-    explicit QCategory3DAxis(QObject *parent = 0);
+    explicit QCategory3DAxis(QObject *parent = Q_NULLPTR);
     virtual ~QCategory3DAxis();
 
     void setLabels(const QStringList &labels);
diff --git a/src/datavisualization/axis/qlogvalue3daxisformatter.h b/src/datavisualization/axis/qlogvalue3daxisformatter.h
index ec7d12d2..45d70f43 100644
--- a/src/datavisualization/axis/qlogvalue3daxisformatter.h
+++ b/src/datavisualization/axis/qlogvalue3daxisformatter.h
@@ -45,9 +45,9 @@ class QT_DATAVISUALIZATION_EXPORT QLogValue3DAxisFormatter : public QValue3DAxis
     Q_PROPERTY(bool showEdgeLabels READ showEdgeLabels WRITE setShowEdgeLabels NOTIFY showEdgeLabelsChanged)
 
 protected:
-    explicit QLogValue3DAxisFormatter(QLogValue3DAxisFormatterPrivate *d, QObject *parent = 0);
+    explicit QLogValue3DAxisFormatter(QLogValue3DAxisFormatterPrivate *d, QObject *parent = Q_NULLPTR);
 public:
-    explicit QLogValue3DAxisFormatter(QObject *parent = 0);
+    explicit QLogValue3DAxisFormatter(QObject *parent = Q_NULLPTR);
     virtual ~QLogValue3DAxisFormatter();
 
     void setBase(qreal base);
diff --git a/src/datavisualization/axis/qvalue3daxis.h b/src/datavisualization/axis/qvalue3daxis.h
index e1a12ec8..e430c03a 100644
--- a/src/datavisualization/axis/qvalue3daxis.h
+++ b/src/datavisualization/axis/qvalue3daxis.h
@@ -47,7 +47,7 @@ class QT_DATAVISUALIZATION_EXPORT QValue3DAxis : public QAbstract3DAxis
     Q_PROPERTY(bool reversed READ reversed WRITE setReversed NOTIFY reversedChanged REVISION 1)
 
 public:
-    explicit QValue3DAxis(QObject *parent = 0);
+    explicit QValue3DAxis(QObject *parent = Q_NULLPTR);
     virtual ~QValue3DAxis();
 
     void setSegmentCount(int count);
diff --git a/src/datavisualization/axis/qvalue3daxisformatter.h b/src/datavisualization/axis/qvalue3daxisformatter.h
index 76ad6055..72392d0c 100644
--- a/src/datavisualization/axis/qvalue3daxisformatter.h
+++ b/src/datavisualization/axis/qvalue3daxisformatter.h
@@ -46,9 +46,9 @@ class QT_DATAVISUALIZATION_EXPORT QValue3DAxisFormatter : public QObject
 {
     Q_OBJECT
 protected:
-    explicit QValue3DAxisFormatter(QValue3DAxisFormatterPrivate *d, QObject *parent = 0);
+    explicit QValue3DAxisFormatter(QValue3DAxisFormatterPrivate *d, QObject *parent = Q_NULLPTR);
 public:
-    explicit QValue3DAxisFormatter(QObject *parent = 0);
+    explicit QValue3DAxisFormatter(QObject *parent = Q_NULLPTR);
     virtual ~QValue3DAxisFormatter();
 
 protected: