diff --git a/CHANGES b/CHANGES
index 98caae8e1f..f72a05822e 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+6157.	[bug]		When removing delegations in an OPTOUT range
+			empty-non-terminal NSEC3 records generated by
+			those delegations where not removed. [GL #4027]
+
 6156.	[bug]		Reimplement the maximum and idle timeouts for incoming
 			zone tranfers. [GL #4004]