diff --git a/doc/notes/notes-current.rst b/doc/notes/notes-current.rst
index d85dc86a16..4fccc02611 100644
--- a/doc/notes/notes-current.rst
+++ b/doc/notes/notes-current.rst
@@ -39,4 +39,6 @@ Feature Changes
 Bug Fixes
 ~~~~~~~~~
 
-- None.
+- Updating contents of an RPZ zone which contained names spelled using
+  varying letter case could cause some processing rules in that RPZ zone
+  to be erroneously ignored. [GL #2169]