diff --git a/Packages/Min_quadrilateral_2/changes.txt b/Packages/Min_quadrilateral_2/changes.txt
index 5ff2735cdd4..2c049e2cc9b 100644
--- a/Packages/Min_quadrilateral_2/changes.txt
+++ b/Packages/Min_quadrilateral_2/changes.txt
@@ -2,6 +2,8 @@
 //	Revision History for package Min_quadrilateral_2
 //=====================================================================
 
+Version 1.29 on 10-Sep-2003 [rursu]
+- Qt_help_window is in the CGAL namespace now.
 
 Version 1.28 on 07-Sep-2003 [rursu]
 - demo use now the new help class Qt_help_window instead of HelpWindow
diff --git a/Packages/Min_quadrilateral_2/demo/Min_quadrilateral_2/min_quadrilateral_2.C b/Packages/Min_quadrilateral_2/demo/Min_quadrilateral_2/min_quadrilateral_2.C
index 33d96591a1d..2ae84e5c3cb 100644
--- a/Packages/Min_quadrilateral_2/demo/Min_quadrilateral_2/min_quadrilateral_2.C
+++ b/Packages/Min_quadrilateral_2/demo/Min_quadrilateral_2/min_quadrilateral_2.C
@@ -187,7 +187,8 @@ private slots:
   void howto(){
     QString home;
     home = "help/index.html";
-    Qt_help_window *help = new Qt_help_window(home, ".", 0, "help viewer");
+    CGAL::Qt_help_window *help = new 
+      CGAL::Qt_help_window(home, ".", 0, "help viewer");
     help->resize(400, 400);
     help->setCaption("Demo HowTo");
     help->show();