diff --git a/src/charttheme.cpp b/src/charttheme.cpp
index 09333ee..74f5626 100644
--- a/src/charttheme.cpp
+++ b/src/charttheme.cpp
@@ -223,7 +223,7 @@ void ChartTheme::decorate(QPieSeries* series, int index, bool force)
         QColor brushColor = colorAt(m_seriesGradients.at(index % m_seriesGradients.size()), pos);
 
         QPieSlice *s = series->slices().at(i);
-        PieSliceData data = *s->data_ptr();
+        PieSliceData data = PieSliceData::data(s);
 
         if (data.m_slicePen.isThemed() || force) {
             data.m_slicePen = penColor;
@@ -245,9 +245,9 @@ void ChartTheme::decorate(QPieSeries* series, int index, bool force)
             data.m_labelFont.setThemed(true);
         }
 
-        if (*s->data_ptr() != data) {
-            *s->data_ptr() = data;
-            emit s->data_ptr()->emitChangedSignal(s);
+        if (PieSliceData::data(s) != data) {
+            PieSliceData::data(s) = data;
+            emit PieSliceData::data(s).emitChangedSignal(s);
         }
     }
 }
diff --git a/src/piechart/piechartitem.cpp b/src/piechart/piechartitem.cpp
index 3a6679a..82ce8a1 100644
--- a/src/piechart/piechartitem.cpp
+++ b/src/piechart/piechartitem.cpp
@@ -147,7 +147,7 @@ void PieChartItem::calculatePieLayout()
 PieSliceData PieChartItem::sliceData(QPieSlice *slice)
 {
 	// TODO: This function is kid of useless now. Refactor.
-    PieSliceData sliceData = *slice->data_ptr();
+    PieSliceData sliceData = PieSliceData::data(slice);
     sliceData.m_center = PieSliceItem::sliceCenter(m_pieCenter, m_pieRadius, slice);
     sliceData.m_radius = m_pieRadius;
     return sliceData;
diff --git a/src/piechart/pieslicedata_p.h b/src/piechart/pieslicedata_p.h
index b60ad9a..e596ce1 100644
--- a/src/piechart/pieslicedata_p.h
+++ b/src/piechart/pieslicedata_p.h
@@ -110,6 +110,12 @@ public:
         emit s->changed();
     }
 
+    static PieSliceData &data(QPieSlice *slice)
+    {
+        Q_ASSERT(slice);
+        return *slice->d;
+    }
+
     qreal m_value;
 
     Themed<QPen> m_slicePen;
diff --git a/src/piechart/qpieseries.cpp b/src/piechart/qpieseries.cpp
index 29caa99..b0466f4 100644
--- a/src/piechart/qpieseries.cpp
+++ b/src/piechart/qpieseries.cpp
@@ -69,21 +69,21 @@ void QPieSeriesPrivate::updateDerivativeData()
     QVector<QPieSlice*> changed;
     foreach (QPieSlice* s, m_slices) {
 
-        PieSliceData data = *s->data_ptr();
+        PieSliceData data = PieSliceData::data(s);
         data.m_percentage = s->value() / m_total;
         data.m_angleSpan = pieSpan * data.m_percentage;
         data.m_startAngle = sliceAngle;
         sliceAngle += data.m_angleSpan;
 
-        if (*s->data_ptr() != data) {
-            *s->data_ptr() = data;
+        if (PieSliceData::data(s) != data) {
+            PieSliceData::data(s) = data;
             changed << s;
         }
     }
 
     // emit signals
     foreach (QPieSlice* s, changed)
-        s->data_ptr()->emitChangedSignal(s);
+        PieSliceData::data(s).emitChangedSignal(s);
 }
 
 void QPieSeriesPrivate::sliceChanged()
diff --git a/src/piechart/qpieslice.h b/src/piechart/qpieslice.h
index 5a6e984..a82d13e 100644
--- a/src/piechart/qpieslice.h
+++ b/src/piechart/qpieslice.h
@@ -80,10 +80,6 @@ private:
     friend class PieSliceData;
     PieSliceData * const d;
     Q_DISABLE_COPY(QPieSlice)
-
-public:
-    typedef PieSliceData * const DataPtr;
-    inline DataPtr &data_ptr() { return d; }
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE