diff --git a/Surface_sweep_2/include/CGAL/Surface_sweep_2/Subcurves_visitor.h b/Surface_sweep_2/include/CGAL/Surface_sweep_2/Subcurves_visitor.h
index 50a8e88a72f..526a4ba3490 100644
--- a/Surface_sweep_2/include/CGAL/Surface_sweep_2/Subcurves_visitor.h
+++ b/Surface_sweep_2/include/CGAL/Surface_sweep_2/Subcurves_visitor.h
@@ -12,6 +12,10 @@
 // This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 // WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 //
+// $URL$
+// $Id$
+// SPDX-License-Identifier: GPL-3.0+
+//
 // Author(s): Baruch Zukerman <baruchzu@post.tau.ac.il>
 //            Efi Fogel       <efif@post.tau.ac.il>
 //            (based on old version by Tali Zvi)