diff --git a/doc/notes/notes-9.20.18.rst b/doc/notes/notes-9.20.18.rst
index 5381cf6062..ec0602b2fd 100644
--- a/doc/notes/notes-9.20.18.rst
+++ b/doc/notes/notes-9.20.18.rst
@@ -58,13 +58,6 @@ Bug Fixes
   additional data was omitted from the response, including mandatory
   glue. This has been corrected. :gl:`#5659`
 
-- Adding NSEC3 opt-out records could leave invalid records in chain.
-
-  When creating an NSEC3 opt-out chain, a node in the chain could be
-  removed too soon, causing the previous NSEC3 being unable to be found,
-  resulting in invalid NSEC3 records to be left in the zone. This has
-  been fixed. :gl:`#5671`
-
 - Fix slow speed of NSEC3 optout large delegation zone signing.
 
   BIND 9.20 takes much more time signing a large delegation zone with