diff --git a/ChangeLog b/ChangeLog
index 46d1db2dd..ada067693 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2008-12-14	Tobias Doerffel	<tobydox/at/users/dot/sourceforge/dot/net>
 
+	* include/group_box.h:
+	added NULL as default argument for parent
+
 	* include/effect_rack_view.h:
 	* src/gui/widgets/effect_rack_view.cpp:
 	manage effectRackView with a QVBoxLayout
diff --git a/include/group_box.h b/include/group_box.h
index a77e1250e..fe8b7479c 100644
--- a/include/group_box.h
+++ b/include/group_box.h
@@ -1,5 +1,5 @@
 /*
- * group_box.h - LMMS-groupbox
+ * group_box.h - LMMS groupbox
  *
  * Copyright (c) 2005-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  * 
@@ -39,7 +39,7 @@ class groupBox : public QWidget, public boolModelView
 {
 	Q_OBJECT
 public:
-	groupBox( const QString & _caption, QWidget * _parent );
+	groupBox( const QString & _caption, QWidget * _parent = NULL );
 	virtual ~groupBox();
 
 	virtual void modelChanged( void );