diff --git a/demos/piechartcustomization/mainwidget.cpp b/demos/piechartcustomization/mainwidget.cpp
index ec0bfdc..af69375 100644
--- a/demos/piechartcustomization/mainwidget.cpp
+++ b/demos/piechartcustomization/mainwidget.cpp
@@ -115,6 +115,14 @@ MainWidget::MainWidget(QWidget* parent)
     m_endAngle->setValue(m_series->pieEndAngle());
     m_endAngle->setSingleStep(1);
 
+    m_isDonut = new QCheckBox();
+
+    m_donutInnerSize = new QDoubleSpinBox();
+    m_donutInnerSize->setMinimum(0.0);
+    m_donutInnerSize->setMaximum(1.0);
+    m_donutInnerSize->setSingleStep(0.1);
+    m_donutInnerSize->setValue(m_series->donutInnerSize());
+
     QPushButton *appendSlice = new QPushButton("Append slice");
     QPushButton *insertSlice = new QPushButton("Insert slice");
     QPushButton *removeSlice = new QPushButton("Remove selected slice");
@@ -125,6 +133,8 @@ MainWidget::MainWidget(QWidget* parent)
     seriesSettingsLayout->addRow("Size factor", m_sizeFactor);
     seriesSettingsLayout->addRow("Start angle", m_startAngle);
     seriesSettingsLayout->addRow("End angle", m_endAngle);
+    seriesSettingsLayout->addRow("Is donut", m_isDonut);
+    seriesSettingsLayout->addRow("Donut inner size", m_donutInnerSize);
     seriesSettingsLayout->addRow(appendSlice);
     seriesSettingsLayout->addRow(insertSlice);
     seriesSettingsLayout->addRow(removeSlice);
@@ -136,6 +146,8 @@ MainWidget::MainWidget(QWidget* parent)
     connect(m_sizeFactor, SIGNAL(valueChanged(double)), this, SLOT(updateSerieSettings()));
     connect(m_startAngle, SIGNAL(valueChanged(double)), this, SLOT(updateSerieSettings()));
     connect(m_endAngle, SIGNAL(valueChanged(double)), this, SLOT(updateSerieSettings()));
+    connect(m_isDonut, SIGNAL(toggled(bool)), this, SLOT(updateSerieSettings()));
+    connect(m_donutInnerSize, SIGNAL(valueChanged(double)), this, SLOT(updateSerieSettings()));
     connect(appendSlice, SIGNAL(clicked()), this, SLOT(appendSlice()));
     connect(insertSlice, SIGNAL(clicked()), this, SLOT(insertSlice()));
     connect(removeSlice, SIGNAL(clicked()), this, SLOT(removeSlice()));
@@ -239,6 +251,8 @@ void MainWidget::updateSerieSettings()
     m_series->setPieSize(m_sizeFactor->value());
     m_series->setPieStartAngle(m_startAngle->value());
     m_series->setPieEndAngle(m_endAngle->value());
+    m_series->setDonut(m_isDonut->isChecked());
+    m_series->setDonutInnerSize(m_donutInnerSize->value());
 }
 
 void MainWidget::updateSliceSettings()
diff --git a/demos/piechartcustomization/mainwidget.h b/demos/piechartcustomization/mainwidget.h
index 1f45e12..4f82b0c 100644
--- a/demos/piechartcustomization/mainwidget.h
+++ b/demos/piechartcustomization/mainwidget.h
@@ -72,6 +72,8 @@ private:
     QDoubleSpinBox* m_sizeFactor;
     QDoubleSpinBox* m_startAngle;
     QDoubleSpinBox* m_endAngle;
+    QCheckBox* m_isDonut;
+    QDoubleSpinBox* m_donutInnerSize;
 
     QLineEdit* m_sliceName;
     QDoubleSpinBox* m_sliceValue;
diff --git a/src/animations/pieanimation.cpp b/src/animations/pieanimation.cpp
index 15d5e44..0cc5bfe 100644
--- a/src/animations/pieanimation.cpp
+++ b/src/animations/pieanimation.cpp
@@ -60,8 +60,11 @@ ChartAnimation* PieAnimation::addSlice(PieSliceItem *sliceItem, const PieSliceDa
     else
         startValue.m_startAngle = sliceData.m_startAngle + (sliceData.m_angleSpan / 2);
     startValue.m_angleSpan = 0;
-    animation->setValue(startValue, sliceData);
 
+    if (sliceData.m_donut)
+        startValue.m_radius = sliceData.m_innerRadius;
+
+    animation->setValue(startValue, sliceData);
     animation->setDuration(ChartAnimationDuration);
     animation->setEasingCurve(QEasingCurve::OutQuart);
 
@@ -75,7 +78,10 @@ ChartAnimation* PieAnimation::removeSlice(PieSliceItem *sliceItem)
     animation->stop();
 
     PieSliceData endValue = animation->currentSliceValue();
-    endValue.m_radius = 0;
+    if (endValue.m_donut)
+        endValue.m_radius = endValue.m_innerRadius;
+    else
+        endValue.m_radius = 0;
     endValue.m_startAngle = endValue.m_startAngle + endValue.m_angleSpan;
     endValue.m_angleSpan = 0;
     endValue.m_isLabelVisible = false;
diff --git a/src/animations/piesliceanimation.cpp b/src/animations/piesliceanimation.cpp
index 10c770e..9cf0bb9 100644
--- a/src/animations/piesliceanimation.cpp
+++ b/src/animations/piesliceanimation.cpp
@@ -110,6 +110,7 @@ QVariant PieSliceAnimation::interpolated(const QVariant &start, const QVariant &
     result.m_angleSpan = linearPos(startValue.m_angleSpan, endValue.m_angleSpan, progress);
     result.m_slicePen = linearPos(startValue.m_slicePen, endValue.m_slicePen, progress);
     result.m_sliceBrush = linearPos(startValue.m_sliceBrush, endValue.m_sliceBrush, progress);
+    result.m_innerRadius = linearPos(startValue.m_innerRadius, endValue.m_innerRadius, progress);
 
     return qVariantFromValue(result);
 }