diff --git a/demos/gdpbarchart/widget.h b/demos/gdpbarchart/widget.h
index 9d9c8a4..61feb08 100644
--- a/demos/gdpbarchart/widget.h
+++ b/demos/gdpbarchart/widget.h
@@ -33,7 +33,7 @@ class QRadioButton;
 class Widget : public QWidget
 {
     Q_OBJECT
-    
+
 public:
     Widget(QWidget *parent = 0);
     ~Widget();