diff --git a/demos/chartthemes/themewidget.cpp b/demos/chartthemes/themewidget.cpp
index 171dff6..6f93a2f 100644
--- a/demos/chartthemes/themewidget.cpp
+++ b/demos/chartthemes/themewidget.cpp
@@ -259,7 +259,7 @@ QChart* ThemeWidget::createPieChart() const
     for (int i = 0; i < m_dataTable.count(); i++) {
         QPieSeries *series = new QPieSeries(chart);
         foreach (Data data, m_dataTable[i]) {
-            QPieSlice *slice = series->append(data.first.y(), data.second);
+            QPieSlice *slice = series->append(data.second, data.first.y());
             if (data == m_dataTable[i].first()) {
                 slice->setLabelVisible();
                 slice->setExploded();
diff --git a/demos/piechartcustomization/customslice.cpp b/demos/piechartcustomization/customslice.cpp
index bc01efd..7cf2a25 100644
--- a/demos/piechartcustomization/customslice.cpp
+++ b/demos/piechartcustomization/customslice.cpp
@@ -22,8 +22,8 @@
 
 QTCOMMERCIALCHART_USE_NAMESPACE
 
-CustomSlice::CustomSlice(qreal value, QString label)
-    :QPieSlice(value, label)
+CustomSlice::CustomSlice(QString label, qreal value)
+    :QPieSlice(label, value)
 {
     connect(this, SIGNAL(hovered(bool)), this, SLOT(showHighlight(bool)));
 }
diff --git a/demos/piechartcustomization/customslice.h b/demos/piechartcustomization/customslice.h
index dd451aa..7192fbb 100644
--- a/demos/piechartcustomization/customslice.h
+++ b/demos/piechartcustomization/customslice.h
@@ -29,7 +29,7 @@ class CustomSlice : public QPieSlice
     Q_OBJECT
 
 public:
-    CustomSlice(qreal value, QString label);
+    CustomSlice(QString label, qreal value);
 
 public:
     QBrush originalBrush();
diff --git a/demos/piechartcustomization/mainwidget.cpp b/demos/piechartcustomization/mainwidget.cpp
index 4f0c251..b65e862 100644
--- a/demos/piechartcustomization/mainwidget.cpp
+++ b/demos/piechartcustomization/mainwidget.cpp
@@ -45,11 +45,11 @@ MainWidget::MainWidget(QWidget* parent)
 
     // create series
     m_series = new QPieSeries();
-    *m_series << new CustomSlice(10.0, "Slice 1");
-    *m_series << new CustomSlice(20.0, "Slice 2");
-    *m_series << new CustomSlice(30.0, "Slice 3");
-    *m_series << new CustomSlice(40.0, "Slice 4");
-    *m_series << new CustomSlice(50.0, "Slice 5");
+    *m_series << new CustomSlice("Slice 1", 10.0);
+    *m_series << new CustomSlice("Slice 2", 20.0);
+    *m_series << new CustomSlice("Slice 3", 30.0);
+    *m_series << new CustomSlice("Slice 4", 40.0);
+    *m_series << new CustomSlice("Slice 5", 50.0);
     m_series->setLabelsVisible();
     chart->addSeries(m_series);
 
@@ -304,7 +304,7 @@ void MainWidget::showFontDialog()
 
 void MainWidget::appendSlice()
 {
-    *m_series << new CustomSlice(10.0, "Slice " + QString::number(m_series->count()+1));
+    *m_series << new CustomSlice("Slice " + QString::number(m_series->count()+1), 10.0);
 }
 
 void MainWidget::insertSlice()
@@ -314,7 +314,7 @@ void MainWidget::insertSlice()
 
     int i = m_series->slices().indexOf(m_slice);
 
-    m_series->insert(i, new CustomSlice(10.0, "Slice " + QString::number(m_series->count()+1)));
+    m_series->insert(i, new CustomSlice("Slice " + QString::number(m_series->count()+1), 10.0));
 }
 
 void MainWidget::removeSlice()
diff --git a/examples/piechart/main.cpp b/examples/piechart/main.cpp
index 6206073..50045f3 100644
--- a/examples/piechart/main.cpp
+++ b/examples/piechart/main.cpp
@@ -32,11 +32,11 @@ int main(int argc, char *argv[])
 
 //![1]
     QPieSeries *series = new QPieSeries();
-    series->append(1, "Jane");
-    series->append(2, "Joe");
-    series->append(3, "Andy");
-    series->append(4, "Barbara");
-    series->append(5, "Axel");
+    series->append("Jane", 1);
+    series->append("Joe", 2);
+    series->append("Andy", 3);
+    series->append("Barbara", 4);
+    series->append("Axel", 5);
 //![1]
 
 //![2]
diff --git a/plugins/declarative/declarativepieseries.cpp b/plugins/declarative/declarativepieseries.cpp
index ee98e13..c906365 100644
--- a/plugins/declarative/declarativepieseries.cpp
+++ b/plugins/declarative/declarativepieseries.cpp
@@ -81,7 +81,7 @@ QPieSlice* DeclarativePieSeries::find(QString label)
 QPieSlice* DeclarativePieSeries::append(QString name, qreal value)
 {
     // TODO: parameter order is wrong, switch it:
-    return QPieSeries::append(value, name);
+    return QPieSeries::append(name, value);
 }
 
 void DeclarativePieSeries::setPieModel(DeclarativeTableModel *model)
diff --git a/src/piechart/qpieseries.cpp b/src/piechart/qpieseries.cpp
index 0ce2106..efc3577 100644
--- a/src/piechart/qpieseries.cpp
+++ b/src/piechart/qpieseries.cpp
@@ -191,12 +191,12 @@ QPieSeries& QPieSeries::operator << (QPieSlice* slice)
 
 
 /*!
-    Appends a single slice to the series with give \a value and \a name.
+    Appends a single slice to the series with give \a value and \a label.
     Slice ownership is passed to the series.
 */
-QPieSlice* QPieSeries::append(qreal value, QString name)
+QPieSlice* QPieSeries::append(QString label, qreal value)
 {
-    QPieSlice* slice = new QPieSlice(value, name);
+    QPieSlice* slice = new QPieSlice(label, value);
     append(slice);
     return slice;
 }
@@ -737,7 +737,7 @@ void QPieSeriesPrivate::initializePieFromModel()
         else
             sliceCount = qMin(m_mapper->count(), m_model->rowCount() - m_mapper->first());
         for (int i = m_mapper->first(); i < m_mapper->first() + sliceCount; i++)
-            q->append(m_model->data(m_model->index(i, m_mapper->mapValues()), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(i, m_mapper->mapLabels()), Qt::DisplayRole).toString());
+            q->append(m_model->data(m_model->index(i, m_mapper->mapLabels()), Qt::DisplayRole).toString(), m_model->data(m_model->index(i, m_mapper->mapValues()), Qt::DisplayRole).toDouble());
     } else {
         if (m_mapper->mapValues() >= m_model->rowCount() || m_mapper->mapLabels() >= m_model->rowCount())
             return;   // mapped columns are not existing
@@ -748,7 +748,7 @@ void QPieSeriesPrivate::initializePieFromModel()
         else
             sliceCount = qMin(m_mapper->count(), m_model->columnCount() - m_mapper->first());
         for (int i = m_mapper->first(); i < m_mapper->first() + sliceCount; i++)
-            q->append(m_model->data(m_model->index(m_mapper->mapValues(), i), Qt::DisplayRole).toDouble(), m_model->data(m_model->index(m_mapper->mapLabels(), i), Qt::DisplayRole).toString());
+            q->append(m_model->data(m_model->index(m_mapper->mapLabels(), i), Qt::DisplayRole).toString(), m_model->data(m_model->index(m_mapper->mapValues(), i), Qt::DisplayRole).toDouble());
     }
     q->setLabelsVisible(true);
 }
diff --git a/src/piechart/qpieseries.h b/src/piechart/qpieseries.h
index 1d8dd26..3c03d0e 100644
--- a/src/piechart/qpieseries.h
+++ b/src/piechart/qpieseries.h
@@ -48,7 +48,7 @@ public:
     bool append(QPieSlice* slice);
     bool append(QList<QPieSlice*> slices);
     QPieSeries& operator << (QPieSlice* slice);
-    QPieSlice* append(qreal value, QString name);
+    QPieSlice* append(QString label, qreal value);
     bool insert(int index, QPieSlice* slice);
     bool remove(QPieSlice* slice);
     void clear();
diff --git a/src/piechart/qpieslice.cpp b/src/piechart/qpieslice.cpp
index 3507560..2e83523 100644
--- a/src/piechart/qpieslice.cpp
+++ b/src/piechart/qpieslice.cpp
@@ -68,7 +68,7 @@ QPieSlice::QPieSlice(QObject *parent)
     Constructs an empty slice with given \a value, \a label and a \a parent.
     \sa QPieSeries::append(), QPieSeries::insert()
 */
-QPieSlice::QPieSlice(qreal value, QString label, QObject *parent)
+QPieSlice::QPieSlice(QString label, qreal value, QObject *parent)
     :QObject(parent),
     d(new PieSliceData())
 {
diff --git a/src/piechart/qpieslice.h b/src/piechart/qpieslice.h
index 9f382c0..114d9b8 100644
--- a/src/piechart/qpieslice.h
+++ b/src/piechart/qpieslice.h
@@ -39,7 +39,7 @@ class QTCOMMERCIALCHART_EXPORT QPieSlice : public QObject
 
 public:
     explicit QPieSlice(QObject *parent = 0);
-    QPieSlice(qreal value, QString label, QObject *parent = 0);
+    QPieSlice(QString label, qreal value, QObject *parent = 0);
     virtual ~QPieSlice();
 
     void setValue(qreal value);
diff --git a/tests/auto/qpieseries/tst_qpieseries.cpp b/tests/auto/qpieseries/tst_qpieseries.cpp
index 9ca0b1b..7a448bb 100644
--- a/tests/auto/qpieseries/tst_qpieseries.cpp
+++ b/tests/auto/qpieseries/tst_qpieseries.cpp
@@ -101,7 +101,7 @@ void tst_qpieseries::append()
     // append pointer
     QPieSlice *slice1 = 0;
     QVERIFY(!s.append(slice1));
-    slice1 = new QPieSlice(1, "slice 1");
+    slice1 = new QPieSlice("slice 1", 1);
     QVERIFY(s.append(slice1));
     QVERIFY(!s.append(slice1));
     QCOMPARE(s.count(), 1);
@@ -112,19 +112,19 @@ void tst_qpieseries::append()
     list << (QPieSlice *) 0;
     QVERIFY(!s.append(list));
     list.clear();
-    list << new QPieSlice(2, "slice 2");
-    list << new QPieSlice(3, "slice 3");
+    list << new QPieSlice("slice 2", 2);
+    list << new QPieSlice("slice 3", 3);
     QVERIFY(s.append(list));
     QVERIFY(!s.append(list));
     QCOMPARE(s.count(), 3);
 
     // append operator
-    s << new QPieSlice(4, "slice 4");
+    s << new QPieSlice("slice 4", 4);
     s << slice1; // fails because already added
     QCOMPARE(s.count(), 4);
 
     // append with params
-    QPieSlice *slice5 = s.append(5, "slice 5");
+    QPieSlice *slice5 = s.append("slice 5", 5);
     QVERIFY(slice5 != 0);
     QCOMPARE(slice5->value(), 5.0);
     QCOMPARE(slice5->label(), QString("slice 5"));
@@ -145,7 +145,7 @@ void tst_qpieseries::insert()
     // insert one slice
     QPieSlice *slice1 = 0;
     QVERIFY(!s.insert(0, slice1));
-    slice1 = new QPieSlice(1, "slice 1");
+    slice1 = new QPieSlice("slice 1", 1);
     QVERIFY(!s.insert(-1, slice1));
     QVERIFY(!s.insert(5, slice1));
     QVERIFY(s.insert(0, slice1));
@@ -153,12 +153,12 @@ void tst_qpieseries::insert()
     QCOMPARE(s.count(), 1);
 
     // add some more slices
-    s.append(2, "slice 2");
-    s.append(4, "slice 4");
+    s.append("slice 2", 2);
+    s.append("slice 4", 4);
     QCOMPARE(s.count(), 3);
 
     // insert between slices
-    s.insert(2, new QPieSlice(3, "slice 3"));
+    s.insert(2, new QPieSlice("slice 3", 3));
     QCOMPARE(s.count(), 4);
 
     // check slices
@@ -173,9 +173,9 @@ void tst_qpieseries::remove()
     QPieSeries s;
 
     // add some slices
-    QPieSlice *slice1 = s.append(1, "slice 1");
-    QPieSlice *slice2 = s.append(2, "slice 2");
-    QPieSlice *slice3 = s.append(3, "slice 3");
+    QPieSlice *slice1 = s.append("slice 1", 1);
+    QPieSlice *slice2 = s.append("slice 2", 2);
+    QPieSlice *slice3 = s.append("slice 3", 3);
     QSignalSpy spy1(slice1, SIGNAL(destroyed()));
     QSignalSpy spy2(slice2, SIGNAL(destroyed()));
     QSignalSpy spy3(slice3, SIGNAL(destroyed()));
@@ -208,15 +208,15 @@ void tst_qpieseries::calculatedValues()
     QPieSeries s;
 
     // add a slice
-    QPieSlice *slice1 = s.append(1, "slice 1");
+    QPieSlice *slice1 = s.append("slice 1", 1);
     verifyCalculatedData(s, &ok);
     if (!ok)
         return;
 
     // add some more slices
     QList<QPieSlice *> list;
-    list << new QPieSlice(2, "slice 2");
-    list << new QPieSlice(3, "slice 3");
+    list << new QPieSlice("slice 2", 2);
+    list << new QPieSlice("slice 3", 3);
     s.append(list);
     verifyCalculatedData(s, &ok);
     if (!ok)
@@ -229,7 +229,7 @@ void tst_qpieseries::calculatedValues()
         return;
 
     // insert a slice
-    s.insert(0, new QPieSlice(1, "Slice 4"));
+    s.insert(0, new QPieSlice("Slice 4", 4));
     verifyCalculatedData(s, &ok);
     if (!ok)
         return;
@@ -271,9 +271,9 @@ void tst_qpieseries::clickedSignal()
     // create a pie series
     QPieSeries *series = new QPieSeries();
     series->setPieSize(1.0);
-    QPieSlice *s1 = series->append(1, "slice 1");
-    series->append(2, "slice 2");
-    series->append(3, "slice 3");
+    QPieSlice *s1 = series->append("slice 1", 1);
+    series->append("slice 2", 2);
+    series->append("slice 3", 3);
     QSignalSpy clickSpy1(series, SIGNAL(clicked(QPieSlice*)));
 
     // add series to the chart
@@ -296,9 +296,9 @@ void tst_qpieseries::hoverSignal()
     // create a pie series
     QPieSeries *series = new QPieSeries();
     series->setPieSize(1.0);
-    QPieSlice *s1 = series->append(1, "slice 1");
-    series->append(2, "slice 2");
-    series->append(3, "slice 3");
+    QPieSlice *s1 = series->append("slice 1", 1);
+    series->append("slice 2", 2);
+    series->append("slice 3", 3);
 
     // add series to the chart
     QChartView view(new QChart());
diff --git a/tests/auto/qpieslice/tst_qpieslice.cpp b/tests/auto/qpieslice/tst_qpieslice.cpp
index 02a6565..5123970 100644
--- a/tests/auto/qpieslice/tst_qpieslice.cpp
+++ b/tests/auto/qpieslice/tst_qpieslice.cpp
@@ -88,7 +88,7 @@ void tst_qpieslice::construction()
     QCOMPARE(slice1.endAngle(), 0.0);
 
     // value and label params
-    QPieSlice slice2(1.0, "foobar");
+    QPieSlice slice2("foobar", 1.0);
     QCOMPARE(slice2.value(), 1.0);
     QCOMPARE(slice2.label(), QString("foobar"));
     QVERIFY(!slice2.isLabelVisible());
@@ -136,9 +136,9 @@ void tst_qpieslice::customize()
 {
     // create a pie series
     QPieSeries *series = new QPieSeries();
-    QPieSlice *s1 = series->append(1, "slice 1");
-    QPieSlice *s2 = series->append(2, "slice 2");
-    series->append(3, "slice 3");
+    QPieSlice *s1 = series->append("slice 1", 1);
+    QPieSlice *s2 = series->append("slice 2", 2);
+    series->append("slice 3", 3);
 
     // customize a slice
     QPen p1(Qt::red);
@@ -171,14 +171,14 @@ void tst_qpieslice::customize()
     QCOMPARE(s1->labelFont(), f1);
 
     // add a slice
-    series->append(4, "slice 4");
+    series->append("slice 4", 4);
     QCOMPARE(s1->pen(), p1);
     QCOMPARE(s1->brush(), b1);
     QCOMPARE(s1->labelPen(), p1);
     QCOMPARE(s1->labelFont(), f1);
 
     // insert a slice
-    series->insert(0, new QPieSlice(5, "slice 5"));
+    series->insert(0, new QPieSlice("slice 5", 5));
     QCOMPARE(s1->pen(), p1);
     QCOMPARE(s1->brush(), b1);
     QCOMPARE(s1->labelPen(), p1);
@@ -198,9 +198,9 @@ void tst_qpieslice::mouseClick()
     // create a pie series
     QPieSeries *series = new QPieSeries();
     series->setPieSize(1.0);
-    QPieSlice *s1 = series->append(1, "slice 1");
-    QPieSlice *s2 = series->append(2, "slice 2");
-    QPieSlice *s3 = series->append(3, "slice 3");
+    QPieSlice *s1 = series->append("slice 1", 1);
+    QPieSlice *s2 = series->append("slice 2", 2);
+    QPieSlice *s3 = series->append("slice 3", 3);
     QSignalSpy clickSpy1(s1, SIGNAL(clicked()));
     QSignalSpy clickSpy2(s2, SIGNAL(clicked()));
     QSignalSpy clickSpy3(s3, SIGNAL(clicked()));
@@ -231,9 +231,9 @@ void tst_qpieslice::mouseHover()
     // create a pie series
     QPieSeries *series = new QPieSeries();
     series->setPieSize(1.0);
-    QPieSlice *s1 = series->append(1, "slice 1");
-    series->append(2, "slice 2");
-    series->append(3, "slice 3");
+    QPieSlice *s1 = series->append("slice 1", 1);
+    series->append("slice 2", 2);
+    series->append("slice 3", 3);
 
     // add series to the chart
     QChartView view(new QChart());
diff --git a/tests/chartwidgettest/mainwidget.cpp b/tests/chartwidgettest/mainwidget.cpp
index 8963887..519e944 100644
--- a/tests/chartwidgettest/mainwidget.cpp
+++ b/tests/chartwidgettest/mainwidget.cpp
@@ -261,7 +261,7 @@ void MainWidget::addSeries(QString seriesName, int columnCount, int rowCount, QS
             QPieSeries *series = new QPieSeries();
             QList<qreal> column = data.at(j);
             for (int i(0); i < column.count(); i++)
-                series->append(column.at(i), labels.at(i));
+                series->append(labels.at(i), column.at(i));
             m_chart->addSeries(series);
         }
     } else if (seriesName == "Bar"