diff --git a/include/boost/intrusive/detail/mpl.hpp b/include/boost/intrusive/detail/mpl.hpp
index 98cb3b3..741a863 100644
--- a/include/boost/intrusive/detail/mpl.hpp
+++ b/include/boost/intrusive/detail/mpl.hpp
@@ -1,7 +1,9 @@
 /////////////////////////////////////////////////////////////////////////////
 //
 // (C) Copyright Ion Gaztanaga  2006-2013
-//
+// Copyright Steve Gates 2013.  
+// Copyright George Mileka 2013.  
+// Portions Copyright (c) Microsoft Open Technologies, Inc. 
 // 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)
@@ -150,7 +152,7 @@ struct identity
 #define BOOST_INTRUSIVE_TT_DECL
 #endif
 
-#if defined(_MSC_EXTENSIONS) && !defined(__BORLAND__) && !defined(_WIN64) && !defined(UNDER_CE)
+#if defined(_MSC_EXTENSIONS) && !defined(__BORLAND__) && !defined(_WIN64) && !defined(_M_ARM) && !defined(UNDER_CE)
 #define BOOST_INTRUSIVE_TT_TEST_MSC_FUNC_SIGS
 #endif