diff --git a/Polyhedron_IO/include/CGAL/IO/STL_writer.h b/Polyhedron_IO/include/CGAL/IO/STL_writer.h
index c872ca9b6c6..319c231efcf 100644
--- a/Polyhedron_IO/include/CGAL/IO/STL_writer.h
+++ b/Polyhedron_IO/include/CGAL/IO/STL_writer.h
@@ -1,9 +1,9 @@
 // Copyright (c) 2017 GeometryFactory
 //
-// 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.
+// 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.
@@ -13,15 +13,13 @@
 //
 // $URL$
 // $Id$
-// SPDX-License-Identifier: GPL-3.0+
+// SPDX-License-Identifier: LGPL-3.0+
 //
 // Author(s)     : Sebastien Loriot
 
 #ifndef CGAL_IO_STL_WRITER_H
 #define CGAL_IO_STL_WRITER_H
 
-#include <CGAL/license/Polyhedron.h>
-
 #include <CGAL/Kernel_traits.h>
 #include <CGAL/boost/graph/properties.h>