diff --git a/include/boost/functional/hash/detail/container_fwd_0x.hpp b/include/boost/functional/hash/detail/container_fwd_0x.hpp
deleted file mode 100644
index bed7730..0000000
--- a/include/boost/functional/hash/detail/container_fwd_0x.hpp
+++ /dev/null
@@ -1,29 +0,0 @@
-
-// Copyright 2012 Daniel James.
-// 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)
-
-#if !defined(BOOST_DETAIL_CONTAINER_FWD_0X_HPP)
-#define BOOST_DETAIL_CONTAINER_FWD_0X_HPP
-
-#include <boost/detail/container_fwd.hpp>
-
-// std::array
-
-#if !defined(BOOST_NO_CXX11_HDR_ARRAY)
-#   include <array>
-#endif
-
-// std::tuple
-
-#if !defined(BOOST_NO_CXX11_HDR_TUPLE)
-#   include <tuple>
-#endif
-
-// std::shared_ptr/std::unique_ptr
-
-#if !defined(BOOST_NO_CXX11_HDR_MEMORY)
-#   include <memory>
-#endif
-
-#endif
diff --git a/include/boost/functional/hash/extensions.hpp b/include/boost/functional/hash/extensions.hpp
index 1ca7263..998c08e 100644
--- a/include/boost/functional/hash/extensions.hpp
+++ b/include/boost/functional/hash/extensions.hpp
@@ -14,12 +14,24 @@
 #define BOOST_FUNCTIONAL_HASH_EXTENSIONS_HPP
 
 #include <boost/functional/hash/hash.hpp>
-#include <boost/functional/hash/detail/container_fwd_0x.hpp>
+#include <boost/detail/container_fwd.hpp>
 #include <boost/utility/enable_if.hpp>
 #include <boost/static_assert.hpp>
 #include <boost/preprocessor/repetition/repeat_from_to.hpp>
 #include <boost/preprocessor/repetition/enum_params.hpp>
 
+#if !defined(BOOST_NO_CXX11_HDR_ARRAY)
+#   include <array>
+#endif
+
+#if !defined(BOOST_NO_CXX11_HDR_TUPLE)
+#   include <tuple>
+#endif
+
+#if !defined(BOOST_NO_CXX11_HDR_MEMORY)
+#   include <memory>
+#endif
+
 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
 # pragma once
 #endif