diff --git a/doc/doxygen_layout.xml b/doc/doxygen_layout.xml
index 7f60622f..dbe3e513 100644
--- a/doc/doxygen_layout.xml
+++ b/doc/doxygen_layout.xml
@@ -1,9 +1,9 @@
 <!--
-<!-- Copyright (c) 2019-2020 Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
-<!--
-<!-- Distributed under the Boost Software License, Version 1.0. (See accompanying
-<!-- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-<!---->
+ Copyright (c) 2019-2020 Ruben Perez Hidalgo (rubenperez038 at gmail dot com)
+
+ Distributed under the Boost Software License, Version 1.0. (See accompanying
+ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+-->
 
 <doxygenlayout version="1.0">
   <!-- Generated by doxygen 1.8.13 -->