diff --git a/include/boost/fusion/support/detail/is_mpl_sequence.hpp b/include/boost/fusion/support/detail/is_mpl_sequence.hpp
index 09a77a8b..749d2f87 100644
--- a/include/boost/fusion/support/detail/is_mpl_sequence.hpp
+++ b/include/boost/fusion/support/detail/is_mpl_sequence.hpp
@@ -6,47 +6,21 @@
     License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
     http://www.boost.org/LICENSE_1_0.txt)
 ==============================================================================*/
-#if !defined(FUSION_DETAIL_IS_MPL_SEQUENCE_15122005_2137)
-#define FUSION_DETAIL_IS_MPL_SEQUENCE_15122005_2137
+#if !defined(FUSION_DETAIL_IS_MPL_SEQUENCE_29122006_1105)
+#define FUSION_DETAIL_IS_MPL_SEQUENCE_29122006_1105
 
 #include <boost/fusion/support/sequence_base.hpp>
+#include <boost/type_traits/is_base_of.hpp>
 #include <boost/mpl/is_sequence.hpp>
 #include <boost/mpl/and.hpp>
 #include <boost/mpl/not.hpp>
-#include <boost/mpl/bool.hpp>
-#include <boost/mpl/int_fwd.hpp>
-#include <boost/mpl/long_fwd.hpp>
-#include <boost/mpl/size_t_fwd.hpp>
-#include <boost/mpl/integral_c_fwd.hpp>
-#include <boost/type_traits/is_base_of.hpp>
-#include <boost/type_traits/is_convertible.hpp>
-#include <cstddef>
 
 namespace boost { namespace fusion { namespace detail
 {
-    struct mpl_int_detect
-    {
-        template <int N>
-        mpl_int_detect(mpl::int_<N>) {}
-
-        template <bool B>
-        mpl_int_detect(mpl::bool_<B>) {}
-
-        template <typename T, T N>
-        mpl_int_detect(mpl::integral_c<T, N>) {}
-
-        template <long N>
-        mpl_int_detect(mpl::long_<N>) {}
-
-        template <std::size_t N>
-        mpl_int_detect(mpl::size_t<N>) {}
-    };
-    
     template <typename T>
     struct is_mpl_sequence
         : mpl::and_<
-            mpl::not_<is_convertible<T, mpl_int_detect> >
-          , mpl::not_<is_base_of<sequence_root, T> >
+            mpl::not_<is_base_of<sequence_root, T> >
           , mpl::is_sequence<T> >
     {};
 }}}