diff --git a/src/areachart/areachartitem.cpp b/src/areachart/areachartitem.cpp
index f8a5545..929cd34 100644
--- a/src/areachart/areachartitem.cpp
+++ b/src/areachart/areachartitem.cpp
@@ -10,7 +10,8 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
 //TODO: optimize : remove points which are not visible
 
-AreaChartItem::AreaChartItem(QAreaSeries *areaSeries,ChartPresenter *presenter) : ChartItem(presenter),
+AreaChartItem::AreaChartItem(QAreaSeries *areaSeries, ChartPresenter *presenter)
+    : ChartItem(presenter),
     m_series(areaSeries),
     m_upper(0),
     m_lower(0),
@@ -18,9 +19,8 @@ AreaChartItem::AreaChartItem(QAreaSeries *areaSeries,ChartPresenter *presenter) 
 {
     setZValue(ChartPresenter::LineChartZValue);
     m_upper = new AreaBoundItem(this,m_series->upperSeries());
-    if (m_series->lowerSeries()) {
+    if (m_series->lowerSeries())
         m_lower = new AreaBoundItem(this,m_series->lowerSeries());
-    }
 
     connect(areaSeries,SIGNAL(updated()),this,SLOT(handleUpdated()));
     connect(this,SIGNAL(clicked(const QPointF&)),areaSeries,SIGNAL(clicked(const QPointF&)));
@@ -32,7 +32,7 @@ AreaChartItem::~AreaChartItem()
 {
     delete m_upper;
     delete m_lower;
-};
+}
 
 QRectF AreaChartItem::boundingRect() const
 {
@@ -60,8 +60,8 @@ void AreaChartItem::updatePath()
     }
     path.closeSubpath();
     prepareGeometryChange();
-    m_path=path;
-    m_rect=path.boundingRect();
+    m_path = path;
+    m_rect = path.boundingRect();
     update();
 }
 
@@ -71,7 +71,7 @@ void AreaChartItem::handleUpdated()
     m_linePen = m_series->pen();
     m_brush = m_series->brush();
     m_pointPen = m_series->pen();
-    m_pointPen.setWidthF(2*m_pointPen.width());
+    m_pointPen.setWidthF(2 * m_pointPen.width());
 
     update();
 }
@@ -91,7 +91,6 @@ void AreaChartItem::handleGeometryChanged(const QRectF &rect)
     if (m_lower)
         m_lower->handleGeometryChanged(rect);
 }
-//painter
 
 void AreaChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
diff --git a/src/areachart/areachartitem_p.h b/src/areachart/areachartitem_p.h
index 3f86311..b9fa66d 100644
--- a/src/areachart/areachartitem_p.h
+++ b/src/areachart/areachartitem_p.h
@@ -15,7 +15,7 @@ class AreaChartItem : public ChartItem
     Q_OBJECT
 public:
     AreaChartItem(QAreaSeries *areaSeries, ChartPresenter *presenter);
-    ~ AreaChartItem();
+    ~AreaChartItem();
 
     //from QGraphicsItem
     QRectF boundingRect() const;
@@ -56,7 +56,7 @@ class AreaBoundItem : public LineChartItem
 {
 public:
     AreaBoundItem(AreaChartItem *item,QLineSeries *lineSeries) : LineChartItem(lineSeries, 0), m_item(item) {}
-    ~AreaBoundItem(){}
+    ~AreaBoundItem() {}
 
     void setLayout(QVector<QPointF> &points) {
         LineChartItem::setLayout(points);
@@ -65,7 +65,6 @@ public:
 
 private:
     AreaChartItem* m_item;
-
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/areachart/qareaseries.cpp b/src/areachart/qareaseries.cpp
index 9aa4ff5..11e990e 100644
--- a/src/areachart/qareaseries.cpp
+++ b/src/areachart/qareaseries.cpp
@@ -78,12 +78,14 @@ QTCOMMERCIALCHART_BEGIN_NAMESPACE
     upperSeries line and \a lowerSeries line.  If no \a lowerSeries is passed to constructor, area is specified by axis x (y=0) instead.
     When series object is added to QChartView or QChart instance ownerships is transfered.
 */
-QAreaSeries::QAreaSeries(QLineSeries* upperSeries,QLineSeries* lowerSeries):QSeries(upperSeries),
-m_upperSeries(upperSeries),
-m_lowerSeries(lowerSeries),
-m_pointsVisible(false)
+QAreaSeries::QAreaSeries(QLineSeries *upperSeries, QLineSeries *lowerSeries)
+    : QSeries(upperSeries),
+    m_upperSeries(upperSeries),
+    m_lowerSeries(lowerSeries),
+    m_pointsVisible(false)
 {
 }
+
 /*!
     Destroys the object. Series added to QChartView or QChart instances are owned by those,
     and are deleted when mentioned object are destroyed.
@@ -95,7 +97,7 @@ QAreaSeries::~QAreaSeries()
 /*!
     Sets \a pen used for drawing area outline.
 */
-void QAreaSeries::setPen(const QPen& pen)
+void QAreaSeries::setPen(const QPen &pen)
 {
     if (m_pen != pen) {
         m_pen = pen;
diff --git a/src/xychart/qxyseries.h b/src/xychart/qxyseries.h
index 0ba7265..e135883 100644
--- a/src/xychart/qxyseries.h
+++ b/src/xychart/qxyseries.h
@@ -12,7 +12,7 @@ class QTCOMMERCIALCHART_EXPORT QXYSeries : public QSeries
 {
     Q_OBJECT
 protected:
-    QXYSeries(QObject *parent=0);
+    QXYSeries(QObject *parent = 0);
     virtual ~QXYSeries();
 
 public:
@@ -36,21 +36,21 @@ public:
 
     void setPen(const QPen &pen);
     QPen pen() const {return m_pen;}
-    void setBrush(const QBrush &pen);
+    void setBrush(const QBrush &brush);
     QBrush brush() const {return m_brush;}
 
     bool setModel(QAbstractItemModel *model);
-    QAbstractItemModel* model() {return m_model;}
+    QAbstractItemModel* model() { return m_model; }
 
     virtual void setModelMapping(int modelX, int modelY, Qt::Orientation orientation = Qt::Vertical);
     virtual void setModelMappingShift(int first, int count = 0);
 
-    private slots:
-        void modelUpdated(QModelIndex topLeft, QModelIndex bottomRight);
-        void modelDataAboutToBeAdded(QModelIndex parent, int start, int end);
-        void modelDataAdded(QModelIndex parent, int start, int end);
-        void modelDataAboutToBeRemoved(QModelIndex parent, int start, int end);
-        void modelDataRemoved(QModelIndex parent, int start, int end);
+private slots:
+    void modelUpdated(QModelIndex topLeft, QModelIndex bottomRight);
+    void modelDataAboutToBeAdded(QModelIndex parent, int start, int end);
+    void modelDataAdded(QModelIndex parent, int start, int end);
+    void modelDataAboutToBeRemoved(QModelIndex parent, int start, int end);
+    void modelDataRemoved(QModelIndex parent, int start, int end);
 
 signals:
     void clicked(const QPointF &point);