diff --git a/Circular_kernel_2/benchmark/parser/benchmark_lexer.cpp b/Circular_kernel_2/benchmark/parser/benchmark_lexer.cpp
index e85e1f11621..8161e558709 100644
--- a/Circular_kernel_2/benchmark/parser/benchmark_lexer.cpp
+++ b/Circular_kernel_2/benchmark/parser/benchmark_lexer.cpp
@@ -549,13 +549,7 @@ char *yytext;
 // Copyright (c) 2004  Max-Planck-Institut Saarbruecken (Germany)
 // All rights reserved.
 //
-// This file is part of BenchmarkParser; 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.
-//
-// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
-// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+// This file is part of BenchmarkParser
 //
 // $URL$
 // $Id$
diff --git a/Circular_kernel_2/benchmark/parser/benchmark_lexer.l b/Circular_kernel_2/benchmark/parser/benchmark_lexer.l
index 9dcbfc1ceed..3aa77b81a6c 100644
--- a/Circular_kernel_2/benchmark/parser/benchmark_lexer.l
+++ b/Circular_kernel_2/benchmark/parser/benchmark_lexer.l
@@ -2,13 +2,7 @@
 // Copyright (c) 2004  Max-Planck-Institut Saarbruecken (Germany)
 // All rights reserved.
 //
-// This file is part of BenchmarkParser; 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.
-//
-// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
-// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+// This file is part of BenchmarkParser
 //
 // $URL$
 // $Id$
diff --git a/Circular_kernel_2/benchmark/parser/benchmark_parser.y b/Circular_kernel_2/benchmark/parser/benchmark_parser.y
index f2f4ca8d72c..8aad18183e2 100644
--- a/Circular_kernel_2/benchmark/parser/benchmark_parser.y
+++ b/Circular_kernel_2/benchmark/parser/benchmark_parser.y
@@ -2,13 +2,7 @@
 // Copyright (c) 2004  Max-Planck-Institut Saarbruecken (Germany)
 // All rights reserved.
 //
-// This file is part of BenchmarkParser; 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.
-//
-// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
-// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+// This file is part of BenchmarkParser
 //
 // $URL$
 // $Id$
diff --git a/Documentation/doc/scripts/html_output_post_processing.py b/Documentation/doc/scripts/html_output_post_processing.py
index 1fd9d444db3..30d59dbc772 100755
--- a/Documentation/doc/scripts/html_output_post_processing.py
+++ b/Documentation/doc/scripts/html_output_post_processing.py
@@ -3,18 +3,10 @@
 # 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.
-#
-# $URL:
-# $Id:
+# $URL$
+# $Id$
+# SPDX-License-Identifier: GPL-3.0-or-later
 #
 #
 # Author(s)     : Philipp Moeller
diff --git a/Documentation/doc/scripts/testsuite.py b/Documentation/doc/scripts/testsuite.py
index 3bc49ffdc22..1fda305b1e0 100755
--- a/Documentation/doc/scripts/testsuite.py
+++ b/Documentation/doc/scripts/testsuite.py
@@ -3,18 +3,10 @@
 # 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.
-# 
-# $URL:
-# $Id:
+# $URL$
+# $Id$
+# SPDX-License-Identifier: GPL-3.0-or-later
 # 
 # 
 # Author(s)     : Philipp Moeller
diff --git a/Installation/auxiliary/gdb/python/CGAL/printers.py b/Installation/auxiliary/gdb/python/CGAL/printers.py
index ca97b1800cc..c639b9f492d 100755
--- a/Installation/auxiliary/gdb/python/CGAL/printers.py
+++ b/Installation/auxiliary/gdb/python/CGAL/printers.py
@@ -1,16 +1,5 @@
 # Copyright (c) 2011  GeometryFactory Sarl (France)
 #
-# 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.
-#
 # $URL$
 # $Id$
 # SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
diff --git a/Installation/auxiliary/gdb/test-gdb.py b/Installation/auxiliary/gdb/test-gdb.py
index f98f365c301..b5a2b077972 100755
--- a/Installation/auxiliary/gdb/test-gdb.py
+++ b/Installation/auxiliary/gdb/test-gdb.py
@@ -2,17 +2,6 @@
 
 # Copyright (c) 2011  GeometryFactory Sarl (France)
 #
-# 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.
-#
 # $URL$
 # $Id$
 # SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
diff --git a/Scripts/developer_scripts/check_licenses b/Scripts/developer_scripts/check_licenses
index 6d78b0a0b66..84fdc59ff94 100755
--- a/Scripts/developer_scripts/check_licenses
+++ b/Scripts/developer_scripts/check_licenses
@@ -7,16 +7,7 @@
 # and Tel-Aviv University (Israel).  All rights reserved.
 # Copyright (c) 2012 GeometryFactory Sarl (France)
 #
-# 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.
+# This file is part of CGAL (www.cgal.org)
 #
 # $URL$
 # $Id$
diff --git a/Scripts/developer_scripts/licensecheck b/Scripts/developer_scripts/licensecheck
index abadea2b6dd..f833c009cd7 100755
--- a/Scripts/developer_scripts/licensecheck
+++ b/Scripts/developer_scripts/licensecheck
@@ -6,20 +6,7 @@
 #   Copyright (C) 2007, 2008 Adam D. Barratt
 #   Copyright (C) 2012 Francesco Poli
 #
-# This program is free software; 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 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program. If not, see <https://www.gnu.org/licenses/>.
-#
-# SPDX-License-Identifier: LGPL-2.0-or-later
+# SPDX-License-Identifier: GPL-2.0-or-later
 #
 
 =head1 NAME
diff --git a/Scripts/developer_scripts/list_cgal_includes b/Scripts/developer_scripts/list_cgal_includes
index 5d61deaf7fc..a61b64a99d1 100755
--- a/Scripts/developer_scripts/list_cgal_includes
+++ b/Scripts/developer_scripts/list_cgal_includes
@@ -6,16 +6,7 @@
 # Max-Planck-Institute Saarbruecken (Germany),
 # and Tel-Aviv University (Israel).  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; 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.
+# This file is part of CGAL (www.cgal.org)
 #
 # $URL$
 # $Id$
diff --git a/Scripts/scripts/cgal_create_CMakeLists b/Scripts/scripts/cgal_create_CMakeLists
index c6f54419f9a..683dc355ccd 100755
--- a/Scripts/scripts/cgal_create_CMakeLists
+++ b/Scripts/scripts/cgal_create_CMakeLists
@@ -7,16 +7,7 @@
 # Max-Planck-Institute for Informatics Saarbruecken (Germany), 
 # and Tel-Aviv University (Israel).  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.
+# This file is part of CGAL (www.cgal.org)
 #
 # $URL$
 # $Id$
diff --git a/Scripts/scripts/cgal_create_assertions.sh b/Scripts/scripts/cgal_create_assertions.sh
index c334a241661..f6b391924a2 100755
--- a/Scripts/scripts/cgal_create_assertions.sh
+++ b/Scripts/scripts/cgal_create_assertions.sh
@@ -6,19 +6,11 @@
 # Max-Planck-Institute Saarbruecken (Germany),
 # and Tel-Aviv University (Israel).  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.
+# This file is part of CGAL (www.cgal.org)
 #
 # $URL$
 # $Id$
+# SPDX-License-Identifier: LGPL-3.0-or-later
 # 
 #
 # Author(s)     : Geert-Jan Giezeman, Sven Schönherr
diff --git a/Scripts/scripts/cgal_create_cmake_script b/Scripts/scripts/cgal_create_cmake_script
index 2eebbcdbf06..0e847a263c2 100755
--- a/Scripts/scripts/cgal_create_cmake_script
+++ b/Scripts/scripts/cgal_create_cmake_script
@@ -7,16 +7,7 @@
 # Max-Planck-Institute Saarbruecken (Germany),
 # and Tel-Aviv University (Israel).  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; 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.
+# This file is part of CGAL (www.cgal.org)
 #
 # $URL$
 # $Id$