3 files changed, 6 insertions, 6 deletions
diff --git a/src/charts/axis/barcategoryaxis/qbarcategoryaxis.cpp b/src/charts/axis/barcategoryaxis/qbarcategoryaxis.cpp
index efa02c15..2026359e 100644
--- a/src/charts/axis/barcategoryaxis/qbarcategoryaxis.cpp
+++ b/src/charts/axis/barcategoryaxis/qbarcategoryaxis.cpp
@@ -270,7 +270,7 @@ void QBarCategoryAxis::remove(const QString &category)
                 d->updateCategoryDomain();
             }
         } else {
-            setRange(QString::null, QString::null);
+            setRange(QString(), QString());
         }
         emit categoriesChanged();
         emit countChanged();
@@ -339,7 +339,7 @@ void QBarCategoryAxis::clear()
 {
     Q_D(QBarCategoryAxis);
     d->m_categories.clear();
-    setRange(QString::null, QString::null);
+    setRange(QString(), QString());
     emit categoriesChanged();
     emit countChanged();
 }
@@ -354,8 +354,8 @@ void QBarCategoryAxis::setCategories(const QStringList &categories)
 {
     Q_D(QBarCategoryAxis);
     d->m_categories.clear();
-    d->m_minCategory = QString::null;
-    d->m_maxCategory = QString::null;
+    d->m_minCategory = QString();
+    d->m_maxCategory = QString();
     d->m_min = 0;
     d->m_max = 0;
     d->m_count = 0;
diff --git a/src/charts/axis/logvalueaxis/qlogvalueaxis.cpp b/src/charts/axis/logvalueaxis/qlogvalueaxis.cpp
index 8efe1139..47bed00f 100644
--- a/src/charts/axis/logvalueaxis/qlogvalueaxis.cpp
+++ b/src/charts/axis/logvalueaxis/qlogvalueaxis.cpp
@@ -380,7 +380,7 @@ QLogValueAxisPrivate::QLogValueAxisPrivate(QLogValueAxis *q)
       m_base(10),
       m_tickCount(0),
       m_minorTickCount(0),
-      m_labelFormat(QString::null)
+      m_labelFormat()
 {
 }
 
diff --git a/src/charts/axis/valueaxis/qvalueaxis.cpp b/src/charts/axis/valueaxis/qvalueaxis.cpp
index 2b775e2a..e8f9698f 100644
--- a/src/charts/axis/valueaxis/qvalueaxis.cpp
+++ b/src/charts/axis/valueaxis/qvalueaxis.cpp
@@ -354,7 +354,7 @@ QValueAxisPrivate::QValueAxisPrivate(QValueAxis *q)
       m_max(0),
       m_tickCount(5),
       m_minorTickCount(0),
-      m_format(QString::null),
+      m_format(),
       m_applying(false)
 {