diff --git a/CHANGES.rst b/CHANGES.rst
index 51f6022..9b869ac 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -10,9 +10,12 @@ master (unreleased)
 * `get_subclass()` method is now available on both managers and
   querysets. Thanks Travis Swicegood. Merge of GH-82.
 
-* Indexing into a ``Choices`` instance now translates database representations
-  to human-readable choice names, rather than simply indexing into an array of
-  choice tuples. (Indexing into ``Choices`` was previously not documented.)
+* BACKWARDS-INCOMPATIBLE: Indexing into a ``Choices`` instance now translates
+  database representations to human-readable choice names, rather than simply
+  indexing into an array of choice tuples. (Indexing into ``Choices`` was
+  previously not documented.) If you have code that is relying on indexing or
+  slicing ``Choices``, the simplest workaround is to change e.g. ``STATUS[1:]``
+  to ``list(STATUS)[1:]``.
 
 * Fix bug in `InheritanceManager` with grandchild classes on Django 1.6+;
   `select_subclasses('child', 'child__grandchild')` would only ever get to the