diff --git a/include/boost/type_traits/is_function.hpp b/include/boost/type_traits/is_function.hpp
index 02c661d..1c8d024 100644
--- a/include/boost/type_traits/is_function.hpp
+++ b/include/boost/type_traits/is_function.hpp
@@ -56,7 +56,7 @@ struct is_function_chooser<false>
 template <typename T>
 struct is_function_impl
     : is_function_chooser< ::boost::is_reference<T>::value >
-        ::template result_<T>
+        ::BOOST_NESTED_TEMPLATE result_<T>
 {
 };