diff --git a/include/boost/python/return_internal_reference.hpp b/include/boost/python/return_internal_reference.hpp
index d696c7fa..2f567e55 100644
--- a/include/boost/python/return_internal_reference.hpp
+++ b/include/boost/python/return_internal_reference.hpp
@@ -7,36 +7,11 @@
 # define RETURN_INTERNAL_REFERENCE_DWA2002131_HPP
 
 # include <boost/python/default_call_policies.hpp>
-# include <boost/type_traits/object_traits.hpp>
 # include <boost/python/reference_existing_object.hpp>
-# include <boost/python/to_python_indirect.hpp>
 # include <boost/python/with_custodian_and_ward.hpp>
 
 namespace boost { namespace python { 
 
-namespace detail
-{
-  template <class T>
-  struct return_internal_reference_requires_a_pointer_or_reference_return_type
-# if defined(__GNUC__) && __GNUC__ >= 3 || defined(__EDG__)
-  {}
-# endif
-  ;
-}
-
-struct internal_reference_to_python_generator
-{
-    template <class T>
-    struct apply
-    {
-        typedef typename mpl::select_type<
-            is_object<T>::value
-            , detail::return_internal_reference_requires_a_pointer_or_reference_return_type<T>
-            , to_python_indirect<T, detail::make_reference_holder>
-        >::type type;
-    };
-};
-
 template <std::size_t owner_arg = 1, class Base = default_call_policies>
 struct return_internal_reference
     : with_custodian_and_ward_postcall<0, owner_arg, Base>