diff --git a/Packages/Interval_arithmetic/changes.txt b/Packages/Interval_arithmetic/changes.txt
index b2c0476eae6..cb45fd9a59c 100644
--- a/Packages/Interval_arithmetic/changes.txt
+++ b/Packages/Interval_arithmetic/changes.txt
@@ -1,3 +1,6 @@
+11 February 2006 Sylvain Pion
+- Fix license of Uncertain.h (was QPL instead LGPL).
+
 10 February 2006 Sylvain Pion
 - Lazy_exact_nt::ZERO : make the static variable a function-static variable
   to avoid global ordering problems (additional cost expected negligible).
diff --git a/Packages/Interval_arithmetic/include/CGAL/Uncertain.h b/Packages/Interval_arithmetic/include/CGAL/Uncertain.h
index 8812bbb7489..211e9f8526b 100644
--- a/Packages/Interval_arithmetic/include/CGAL/Uncertain.h
+++ b/Packages/Interval_arithmetic/include/CGAL/Uncertain.h
@@ -1,9 +1,10 @@
 // Copyright (c) 2005  INRIA Sophia-Antipolis (France).
 // All rights reserved.
 //
-// This file is part of CGAL (www.cgal.org); you may redistribute it under
-// the terms of the Q Public License version 1.0.
-// See the file LICENSE.QPL distributed with CGAL.
+// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public License as
+// published by the Free Software Foundation; version 2.1 of the License.
+// See the file LICENSE.LGPL distributed with CGAL.
 //
 // Licensees holding a valid commercial license may use this file in
 // accordance with the commercial license agreement provided with the software.
@@ -15,7 +16,7 @@
 // $Revision$ $Date$
 // $Name$
 //
-// Author : Sylvain Pion.
+// Author(s)     : Sylvain Pion
 
 #ifndef CGAL_UNCERTAIN_H
 #define CGAL_UNCERTAIN_H