diff --git a/demos/callout/callout.cpp b/demos/callout/callout.cpp
index e6dc5ed..22130e2 100644
--- a/demos/callout/callout.cpp
+++ b/demos/callout/callout.cpp
@@ -31,7 +31,7 @@ void Callout::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, Q
     if (!m_rect.contains(anchor)) {
         QPointF point1, point2;
 
-        // establish the position of the anchor point in relation to m_textRect
+        // establish the position of the anchor point in relation to m_rect
         bool above = anchor.y() <= m_rect.top();
         bool aboveCenter = anchor.y() > m_rect.top() && anchor.y() <= m_rect.center().y();
         bool belowCenter = anchor.y() > m_rect.center().y() && anchor.y() <= m_rect.bottom();
@@ -42,7 +42,7 @@ void Callout::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, Q
         bool rightOfCenter = anchor.x() > m_rect.center().x() && anchor.x() <= m_rect.right();
         bool onRight = anchor.x() > m_rect.right();
 
-        // get the nearest m_textRect corner.
+        // get the nearest m_rect corner.
         qreal x = (onRight + rightOfCenter) * m_rect.width();
         qreal y = (below + belowCenter) * m_rect.height();
         bool cornerCase = (above && onLeft) || (above && onRight) || (below && onLeft) || (below && onRight);
diff --git a/doc/src/demos-callout.qdoc b/doc/src/demos-callout.qdoc
index 5f6bb42..126c97a 100644
--- a/doc/src/demos-callout.qdoc
+++ b/doc/src/demos-callout.qdoc
@@ -6,7 +6,9 @@
      This demo shows how to draw an additional element (a callout) on top of the chart.
      \image demos_callout.png
 
-     QChart class provides two methods that map between the scene coordinates and the series' domain (defines by the axes ranges).
+     QChart class provides two methods that map between the scene coordinates and the series' domain (defined by the axes ranges).
+
      QPointF QChart::mapToPosition(const QPointF &value, QAbstractSeries *series)
+
      QPointF QChart::mapToValue(const QPointF &position, QAbstractSeries *series)
 */