diff --git a/include/boost/typeof/native.hpp b/include/boost/typeof/native.hpp
index 1c65a8c..4861782 100755
--- a/include/boost/typeof/native.hpp
+++ b/include/boost/typeof/native.hpp
@@ -22,7 +22,10 @@ namespace boost { namespace type_of {
 #include <boost/utility/enable_if.hpp>
 
 namespace boost { namespace type_of {
-
+# ifdef BOOST_NO_SFINAE
+    template<class V, class T> 
+    sizer<typename encode_type<V, T>::type> encode(const T&);
+# else	
     template<typename T>
         typename enable_if<is_function<T>, T&>::type
         ensure_obj(T&);
@@ -30,7 +33,7 @@ namespace boost { namespace type_of {
     template<typename T>
         typename disable_if<is_function<T>, T&>::type
         ensure_obj(const T&);
-
+# endif
 }}
 
 #endif//BOOST_NO_SFINAE
diff --git a/include/boost/typeof/typeof_impl.hpp b/include/boost/typeof/typeof_impl.hpp
index 9c23de6..2cfccdb 100755
--- a/include/boost/typeof/typeof_impl.hpp
+++ b/include/boost/typeof/typeof_impl.hpp
@@ -34,7 +34,10 @@ namespace boost { namespace type_of {
 
 //
 namespace boost { namespace type_of {   
-
+# ifdef BOOST_NO_SFINAE
+    template<class V, class T> 
+    sizer<typename encode_type<V, T>::type> encode(const T&);
+# else
     template<class V, class T> 
     typename enable_if<
         typename is_function<T>::type,
@@ -44,7 +47,7 @@ namespace boost { namespace type_of {
     typename disable_if<
         typename is_function<T>::type,
         sizer<typename encode_type<V, T>::type> >::type encode(const T&);
-
+# endif
 }}
 //
 namespace boost { namespace type_of {