diff --git a/include/boost/python/suite/indexing/container_traits.hpp b/include/boost/python/suite/indexing/container_traits.hpp
index 2d304c43..7bcf0828 100755
--- a/include/boost/python/suite/indexing/container_traits.hpp
+++ b/include/boost/python/suite/indexing/container_traits.hpp
@@ -157,10 +157,13 @@ namespace boost { namespace python { namespace indexing {
     typedef typename boost::call_traits<index_type>::param_type index_param;
 
     BOOST_STATIC_CONSTANT (IndexStyle,   index_style = index_style_nonlinear);
-    BOOST_STATIC_CONSTANT (bool,   has_find    = true);
-    BOOST_STATIC_CONSTANT (bool,   is_reorderable = false);
-    // MSVC seems to have a mutable std::set::reference, so we need
-    // to explicitly cancel is_reorderable here
+    BOOST_STATIC_CONSTANT (bool,   has_find        = true);
+
+    BOOST_STATIC_CONSTANT (bool,   has_mutable_ref = false);
+    BOOST_STATIC_CONSTANT (bool,   is_reorderable  = false);
+    // Some compilers seem to deduce has_mutable_ref as true from the
+    // set iterator traits. The previous two constants explicitly hide
+    // the bad results of that.
   };
 
   /////////////////////////////////////////////////////////////////////////