diff --git a/examples/barchart/main.cpp b/examples/barchart/main.cpp
index f4e2624..a1013bb 100644
--- a/examples/barchart/main.cpp
+++ b/examples/barchart/main.cpp
@@ -51,7 +51,8 @@ int main(int argc, char *argv[])
 //![2]
 
 //![3]
-    QBarSeries* series = new QBarSeries(categories);
+    QBarSeries* series = new QBarSeries();
+    series->setCategories(categories);
     series->appendBarSet(set0);
     series->appendBarSet(set1);
     series->appendBarSet(set2);
diff --git a/examples/percentbarchart/main.cpp b/examples/percentbarchart/main.cpp
index 383bdda..c72e751 100644
--- a/examples/percentbarchart/main.cpp
+++ b/examples/percentbarchart/main.cpp
@@ -51,7 +51,8 @@ int main(int argc, char *argv[])
 //![2]
 
 //![3]
-    QPercentBarSeries* series = new QPercentBarSeries(categories);
+    QPercentBarSeries* series = new QPercentBarSeries();
+    series->setCategories(categories);
     series->appendBarSet(set0);
     series->appendBarSet(set1);
     series->appendBarSet(set2);
diff --git a/examples/stackedbarchart/main.cpp b/examples/stackedbarchart/main.cpp
index 987f2f9..289171a 100644
--- a/examples/stackedbarchart/main.cpp
+++ b/examples/stackedbarchart/main.cpp
@@ -51,7 +51,8 @@ int main(int argc, char *argv[])
 //![2]
 
 //![3]
-    QStackedBarSeries* series = new QStackedBarSeries(categories);
+    QStackedBarSeries* series = new QStackedBarSeries();
+    series->setCategories(categories);
     series->appendBarSet(set0);
     series->appendBarSet(set1);
     series->appendBarSet(set2);
diff --git a/examples/stackedbarchartdrilldown/drilldownseries.cpp b/examples/stackedbarchartdrilldown/drilldownseries.cpp
index 7d3b174..f23413e 100644
--- a/examples/stackedbarchartdrilldown/drilldownseries.cpp
+++ b/examples/stackedbarchartdrilldown/drilldownseries.cpp
@@ -23,8 +23,9 @@
 QTCOMMERCIALCHART_USE_NAMESPACE
 
 DrilldownBarSeries::DrilldownBarSeries(QStringList categories, QObject *parent)
-    : QStackedBarSeries(categories, parent)
+    : QStackedBarSeries(parent)
 {
+    setCategories(categories);
 }
 
 void DrilldownBarSeries::mapDrilldownSeries(QString category, DrilldownBarSeries* drilldownSeries)
diff --git a/qmlplugin/declarativebarseries.cpp b/qmlplugin/declarativebarseries.cpp
index b68adc9..31ecdd5 100644
--- a/qmlplugin/declarativebarseries.cpp
+++ b/qmlplugin/declarativebarseries.cpp
@@ -50,7 +50,9 @@ void DeclarativeBarSeries::setBarCategories(QStringList categories)
         QChart *chart = qobject_cast<QChart *>(declarativeChart->m_chart);
         Q_ASSERT(chart);
 
-        m_series = new QBarSeries(m_categories);
+//        m_series = new QBarSeries(m_categories);
+        m_series = new QBarSeries();
+        m_series->setCategories(m_categories);
 
         // TODO: use data from model
         QBarSet *set0 = new QBarSet("Bub");
diff --git a/src/barchart/qbarseries.cpp b/src/barchart/qbarseries.cpp
index 08aecbb..61aa050 100644
--- a/src/barchart/qbarseries.cpp
+++ b/src/barchart/qbarseries.cpp
@@ -67,8 +67,8 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
     Constructs empty QBarSeries. Parameter \a categories defines the categories for chart.
     QBarSeries is QObject which is a child of a \a parent.
 */
-QBarSeries::QBarSeries(QBarCategories categories, QObject *parent) :
-    QAbstractSeries(*new QBarSeriesPrivate(categories, this),parent)
+QBarSeries::QBarSeries(/*QBarCategories categories,*/ QObject *parent) :
+    QAbstractSeries(*new QBarSeriesPrivate(/*categories,*/ this),parent)
 {
 }
 
@@ -96,6 +96,13 @@ QAbstractSeries::SeriesType QBarSeries::type() const
     return QAbstractSeries::SeriesTypeBar;
 }
 
+void QBarSeries::setCategories(QBarCategories categories)
+{
+    Q_D(QBarSeries);
+    d->setCategories(categories);
+    emit d->categoriesUpdated();
+}
+
 /*!
     Adds a set of bars to series. Takes ownership of \a set.
 */
@@ -227,15 +234,21 @@ void QBarSeries::setLabelsVisible(bool visible)
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
-QBarSeriesPrivate::QBarSeriesPrivate(QBarCategories categories, QBarSeries *q) :
+QBarSeriesPrivate::QBarSeriesPrivate(/*QBarCategories categories,*/ QBarSeries *q) :
     QAbstractSeriesPrivate(q),
-    m_categories(categories),
+//    m_categories(categories),
     m_mapCategories(-1),
     m_mapBarBottom(-1),
     m_mapBarTop(-1)
 {
 }
 
+void QBarSeriesPrivate::setCategories(QBarCategories categories)
+{
+    m_categories = categories;
+}
+
+
 QBarSet* QBarSeriesPrivate::barsetAt(int index)
 {
     return m_barSets.at(index);
diff --git a/src/barchart/qbarseries.h b/src/barchart/qbarseries.h
index 9d79229..45de1b5 100644
--- a/src/barchart/qbarseries.h
+++ b/src/barchart/qbarseries.h
@@ -39,10 +39,11 @@ class QTCOMMERCIALCHART_EXPORT QBarSeries : public QAbstractSeries
 {
     Q_OBJECT
 public:
-    explicit QBarSeries(QBarCategories categories, QObject *parent = 0);
+    explicit QBarSeries(/*QBarCategories categories,*/ QObject *parent = 0);
     virtual ~QBarSeries();
 
     QAbstractSeries::SeriesType type() const;
+    void setCategories(QBarCategories categories);
 
     void appendBarSet(QBarSet *set);            // Takes ownership of set
     void removeBarSet(QBarSet *set);            // Releases ownership, doesn't delete set
diff --git a/src/barchart/qbarseries_p.h b/src/barchart/qbarseries_p.h
index 29e5574..ca75df8 100644
--- a/src/barchart/qbarseries_p.h
+++ b/src/barchart/qbarseries_p.h
@@ -15,7 +15,8 @@ class QBarSeriesPrivate : public QAbstractSeriesPrivate
 {
     Q_OBJECT
 public:
-    QBarSeriesPrivate(QBarCategories categories, QBarSeries *parent);
+    QBarSeriesPrivate(/*QBarCategories categories,*/ QBarSeries *parent);
+    void setCategories(QBarCategories categories);
 
     void scaleDomain(Domain& domain);
     Chart* createGraphics(ChartPresenter* presenter);
diff --git a/src/barchart/qpercentbarseries.cpp b/src/barchart/qpercentbarseries.cpp
index 9277f30..6889b2b 100644
--- a/src/barchart/qpercentbarseries.cpp
+++ b/src/barchart/qpercentbarseries.cpp
@@ -53,8 +53,8 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
     Constructs empty QPercentBarSeries. Parameter \a categories defines the categories for chart.
     QPercentBarSeries is QObject which is a child of a \a parent.
 */
-QPercentBarSeries::QPercentBarSeries(QBarCategories categories, QObject *parent)
-    : QBarSeries(*new QPercentBarSeriesPrivate(categories,this), parent)
+QPercentBarSeries::QPercentBarSeries(/*QBarCategories categories,*/ QObject *parent)
+    : QBarSeries(*new QPercentBarSeriesPrivate(/*categories,*/this), parent)
 {
 }
 
@@ -65,7 +65,7 @@ QAbstractSeries::SeriesType QPercentBarSeries::type() const
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
-QPercentBarSeriesPrivate::QPercentBarSeriesPrivate(QBarCategories categories, QPercentBarSeries *q) : QBarSeriesPrivate(categories,q)
+QPercentBarSeriesPrivate::QPercentBarSeriesPrivate(/*QBarCategories categories,*/ QPercentBarSeries *q) : QBarSeriesPrivate(/*categories,*/q)
 {
 
 }
diff --git a/src/barchart/qpercentbarseries.h b/src/barchart/qpercentbarseries.h
index e8141ec..ba12f97 100644
--- a/src/barchart/qpercentbarseries.h
+++ b/src/barchart/qpercentbarseries.h
@@ -32,8 +32,9 @@ class QTCOMMERCIALCHART_EXPORT QPercentBarSeries : public QBarSeries
 {
     Q_OBJECT
 public:
-    explicit QPercentBarSeries(QBarCategories categories, QObject *parent = 0);
+    explicit QPercentBarSeries(/*QBarCategories categories,*/ QObject *parent = 0);
     QAbstractSeries::SeriesType type() const;
+
 private:
     Q_DECLARE_PRIVATE(QPercentBarSeries)
     Q_DISABLE_COPY(QPercentBarSeries)
diff --git a/src/barchart/qpercentbarseries_p.h b/src/barchart/qpercentbarseries_p.h
index b296c91..d7494a9 100644
--- a/src/barchart/qpercentbarseries_p.h
+++ b/src/barchart/qpercentbarseries_p.h
@@ -39,7 +39,7 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 class QPercentBarSeriesPrivate: public QBarSeriesPrivate
 {
 public:
-    QPercentBarSeriesPrivate(QBarCategories categories,QPercentBarSeries* q);
+    QPercentBarSeriesPrivate(/*QBarCategories categories,*/QPercentBarSeries* q);
     void scaleDomain(Domain& domain);
     Chart* createGraphics(ChartPresenter* presenter);
 
diff --git a/src/barchart/qstackedbarseries.cpp b/src/barchart/qstackedbarseries.cpp
index 3ef6dfe..12f7c62 100644
--- a/src/barchart/qstackedbarseries.cpp
+++ b/src/barchart/qstackedbarseries.cpp
@@ -52,8 +52,8 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
     Constructs empty QStackedBarSeries. Parameter \a categories defines the categories for chart.
     QStackedBarSeries is QObject which is a child of a \a parent.
 */
-QStackedBarSeries::QStackedBarSeries(QBarCategories categories, QObject *parent)
-    : QBarSeries(*new QStackedBarSeriesPrivate(categories,this), parent)
+QStackedBarSeries::QStackedBarSeries(/*QBarCategories categories,*/ QObject *parent)
+    : QBarSeries(*new QStackedBarSeriesPrivate(/*categories,*/this), parent)
 {
 }
 
@@ -64,7 +64,7 @@ QAbstractSeries::SeriesType QStackedBarSeries::type() const
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
-QStackedBarSeriesPrivate::QStackedBarSeriesPrivate(QBarCategories categories, QStackedBarSeries *q) : QBarSeriesPrivate(categories,q)
+QStackedBarSeriesPrivate::QStackedBarSeriesPrivate(/*QBarCategories categories,*/ QStackedBarSeries *q) : QBarSeriesPrivate(/*categories,*/q)
 {
 
 }
diff --git a/src/barchart/qstackedbarseries.h b/src/barchart/qstackedbarseries.h
index 5e0f234..8833d9f 100644
--- a/src/barchart/qstackedbarseries.h
+++ b/src/barchart/qstackedbarseries.h
@@ -32,8 +32,9 @@ class QTCOMMERCIALCHART_EXPORT QStackedBarSeries : public QBarSeries
 {
     Q_OBJECT
 public:
-    explicit QStackedBarSeries(QBarCategories categories, QObject *parent = 0);
+    explicit QStackedBarSeries(/*QBarCategories categories,*/ QObject *parent = 0);
     QAbstractSeries::SeriesType type() const;
+
 private:
     Q_DECLARE_PRIVATE(QStackedBarSeries)
     Q_DISABLE_COPY(QStackedBarSeries)
diff --git a/src/barchart/qstackedbarseries_p.h b/src/barchart/qstackedbarseries_p.h
index 0ff4011..632de86 100644
--- a/src/barchart/qstackedbarseries_p.h
+++ b/src/barchart/qstackedbarseries_p.h
@@ -39,7 +39,7 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 class QStackedBarSeriesPrivate: public QBarSeriesPrivate
 {
 public:
-    QStackedBarSeriesPrivate(QBarCategories categories,QStackedBarSeries* q);
+    QStackedBarSeriesPrivate(/*QBarCategories categories,*/QStackedBarSeries* q);
     Chart* createGraphics(ChartPresenter* presenter);
     void scaleDomain(Domain& domain);
 
diff --git a/test/auto/qbarseries/tst_qbarseries.cpp b/test/auto/qbarseries/tst_qbarseries.cpp
index d184e79..be8d26c 100644
--- a/test/auto/qbarseries/tst_qbarseries.cpp
+++ b/test/auto/qbarseries/tst_qbarseries.cpp
@@ -78,8 +78,10 @@ void tst_QBarSeries::cleanupTestCase()
 void tst_QBarSeries::init()
 {
     m_categories << "category0" << "category1" << "category2";
-    m_barseries = new QBarSeries(m_categories);
-    m_barseries_with_sets = new QBarSeries(m_categories);
+    m_barseries = new QBarSeries();
+    m_barseries->setCategories(m_categories);
+    m_barseries_with_sets = new QBarSeries();
+    m_barseries_with_sets->setCategories(m_categories);
 
     for (int i=0; i<5; i++) {
         m_testSets.append(new QBarSet("testset"));
@@ -113,8 +115,9 @@ void tst_QBarSeries::qbarseries_data()
 void tst_QBarSeries::qbarseries()
 {
     QFETCH(QBarCategories, categories);
-    QBarSeries *barseries = new QBarSeries(categories);
+    QBarSeries *barseries = new QBarSeries();
     QVERIFY(barseries != 0);
+    barseries->setCategories(categories);
     QBarCategories verifyCategories = barseries->categories();
 
     QVERIFY(verifyCategories.count() == categories.count());