diff --git a/ndnboost/mpl/comparison.hpp b/ndnboost/mpl/comparison.hpp
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+++ b/ndnboost/mpl/comparison.hpp
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+
+#ifndef BOOST_MPL_COMPARISON_HPP_INCLUDED
+#define BOOST_MPL_COMPARISON_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2000-2004
+//
+// 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)
+//
+// See http://www.boost.org/libs/mpl for documentation.
+
+// $Id: comparison.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
+// $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
+// $Revision: 49267 $
+
+#include <ndnboost/mpl/equal_to.hpp>
+#include <ndnboost/mpl/not_equal_to.hpp>
+#include <ndnboost/mpl/less.hpp>
+#include <ndnboost/mpl/greater.hpp>
+#include <ndnboost/mpl/less_equal.hpp>
+#include <ndnboost/mpl/greater_equal.hpp>
+
+#endif // BOOST_MPL_COMPARISON_HPP_INCLUDED