diff --git a/include/boost/detail/iterator.hpp b/include/boost/detail/iterator.hpp
index 9260c0b..abaee26 100644
--- a/include/boost/detail/iterator.hpp
+++ b/include/boost/detail/iterator.hpp
@@ -86,8 +86,7 @@ using std::distance;
 
 # else
 
-#  if  !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)  \
-    && !defined(BOOST_MSVC_STD_ITERATOR)
+#  if  !defined(BOOST_MSVC_STD_ITERATOR)
 
 // This is the case where everything conforms except BOOST_NO_STD_ITERATOR_TRAITS