diff --git a/src/barchart/qbarseries_p.h b/src/barchart/qbarseries_p.h
index 579c305..12a7af2 100644
--- a/src/barchart/qbarseries_p.h
+++ b/src/barchart/qbarseries_p.h
@@ -56,6 +56,10 @@ private Q_SLOTS:
 protected:
     QList<QBarSet *> m_barSets;
     QBarCategories m_categories;
+    qreal m_barMargin;
+    int m_mapCategories;
+    int m_mapBarBottom;
+    int m_mapBarTop;
     QBarModelMapper *m_mapper;
 private:
     Q_DECLARE_PUBLIC(QBarSeries)
diff --git a/test/tablemodelchart/tablewidget.cpp b/test/tablemodelchart/tablewidget.cpp
index e56daa0..2169182 100644
--- a/test/tablemodelchart/tablewidget.cpp
+++ b/test/tablemodelchart/tablewidget.cpp
@@ -33,6 +33,7 @@
 #include <QPieSlice>
 #include <QAreaSeries>
 #include <QBarSeries>
+#include <QGroupedBarSeries>
 #include <QBarSet>
 #include <QBarModelMapper>
 #include <QPushButton>
@@ -418,7 +419,7 @@ void TableWidget::updateChartType(bool toggle)
                 {
                     m_chart->setAnimationOptions(QChart::SeriesAnimations);
 
-                    QBarSeries* barSeries = new QBarSeries();
+                    QGroupedBarSeries* barSeries = new QGroupedBarSeries();
                     barSeries->setCategories(QStringList());
                     barSeries->setModel(m_model);
                     //            barSeries->setModelMappingRange(2, 5);