diff --git a/Installation/include/CGAL/mutex.h b/Installation/include/CGAL/mutex.h
index 0491970d485..a7d04549299 100644
--- a/Installation/include/CGAL/mutex.h
+++ b/Installation/include/CGAL/mutex.h
@@ -1,3 +1,20 @@
+// Copyright (c) 2016 GeometryFactory (France)
+//  All rights reserved.
+//
+// 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; either version 3 of the License,
+// or (at your option) any later version.
+//
+// Licensees holding a valid commercial license may use this file in
+// accordance with the commercial license agreement provided with the software.
+//
+// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// $URL$
+// $Id$
+
 #ifndef CGAL_MUTEX_H
 #define CGAL_MUTEX_H
 
diff --git a/Installation/include/CGAL/tss.h b/Installation/include/CGAL/tss.h
index f237f4d987e..9175c657c49 100644
--- a/Installation/include/CGAL/tss.h
+++ b/Installation/include/CGAL/tss.h
@@ -1,3 +1,20 @@
+// Copyright (c) 2016 GeometryFactory (France)
+//  All rights reserved.
+//
+// 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; either version 3 of the License,
+// or (at your option) any later version.
+//
+// Licensees holding a valid commercial license may use this file in
+// accordance with the commercial license agreement provided with the software.
+//
+// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// $URL$
+// $Id$
+
 #ifndef CGAL_TSS_H
 #define CGAL_TSS_H