diff --git a/CHANGES b/CHANGES
index f64ea009b5..86ff535f29 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,11 @@
+6312.	[bug]		Conversion from NSEC3 signed to NSEC signed could
+			temporarily put the zone into a state where it was
+			treated as unsigned until the NSEC chain was built.
+			Additionally conversion from one set of NSEC3 parameters
+			to another could also temporarily put the zone into a
+			state where it was treated as unsigned until the new
+			NSEC3 chain was built. [GL #1794] [GL #4495]
+
 6310.	[bug]		Memory leak in zone.c:sign_zone. When named signed a
 			zone it could leak dst_keys due to a misplaced
 			'continue'. [GL #4488]