diff --git a/doc/iterator_facade_ref.rst b/doc/iterator_facade_ref.rst
index c1baf9b..87c032a 100644
--- a/doc/iterator_facade_ref.rst
+++ b/doc/iterator_facade_ref.rst
@@ -106,7 +106,7 @@ The ``iterator_category`` member of ``iterator_facade`` is
 
 .. parsed-literal::
 
-  *iterator-category*\ (CategoryOrTraversal, value_type, reference)
+  *iterator-category*\ (CategoryOrTraversal, reference, value_type)
 
 where *iterator-category* is defined as follows:
 
diff --git a/include/boost/iterator/detail/facade_iterator_category.hpp b/include/boost/iterator/detail/facade_iterator_category.hpp
old mode 100755
new mode 100644
index 2c4771d..04b393a
--- a/include/boost/iterator/detail/facade_iterator_category.hpp
+++ b/include/boost/iterator/detail/facade_iterator_category.hpp
@@ -73,16 +73,10 @@ struct iterator_writability_disabled
 // Convert an iterator_facade's traversal category, Value parameter,
 // and ::reference type to an appropriate old-style category.
 //
-// If writability has been disabled per the above metafunction, the
-// result will not be convertible to output_iterator_tag.
-//
-// Otherwise, if Traversal == single_pass_traversal_tag, the following
-// conditions will result in a tag that is convertible both to
-// input_iterator_tag and output_iterator_tag:
-//
-//    1. Reference is a reference to non-const
-//    2. Reference is not a reference and is convertible to Value
+// Due to changeset 21683, this now never results in a category convertible
+// to output_iterator_tag.
 //
+// Change at: https://svn.boost.org/trac/boost/changeset/21683
 template <class Traversal, class ValueParam, class Reference>
 struct iterator_facade_default_category
   : mpl::eval_if<