diff --git a/Mesh_3/examples/Mesh_3/implicit_functions.cpp b/Mesh_3/examples/Mesh_3/implicit_functions.cpp
index c7be19a69b5..2491ccdffa8 100644
--- a/Mesh_3/examples/Mesh_3/implicit_functions.cpp
+++ b/Mesh_3/examples/Mesh_3/implicit_functions.cpp
@@ -1,6 +1,14 @@
 // Copyright (c) 2003-2006  INRIA Sophia-Antipolis (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
+// 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.
 //
diff --git a/Mesh_3/examples/Mesh_3/implicit_functions.h b/Mesh_3/examples/Mesh_3/implicit_functions.h
index 5d55a68babb..8b7b903d428 100644
--- a/Mesh_3/examples/Mesh_3/implicit_functions.h
+++ b/Mesh_3/examples/Mesh_3/implicit_functions.h
@@ -1,6 +1,14 @@
 // Copyright (c) 2006  INRIA Sophia-Antipolis (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
+// 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.
 //