diff --git a/CHANGES b/CHANGES
index df42052879..704e5132f4 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+5038.	[bug]		Chaosnet addresses were compared incorrectly.
+			[GL #562]
+
 5034.	[bug]		A race between threads could prevent zone maintenance
 			scheduled immediately after zone load from being
 			performed. [GL #542]
diff --git a/lib/dns/rdata/ch_3/a_1.c b/lib/dns/rdata/ch_3/a_1.c
index a1b571fa14..94cae92c3c 100644
--- a/lib/dns/rdata/ch_3/a_1.c
+++ b/lib/dns/rdata/ch_3/a_1.c
@@ -179,7 +179,7 @@ compare_ch_a(ARGS_COMPARE) {
 	if (order != 0)
 		return (order);
 
-	order = memcmp(rdata1->data, rdata2->data, 2);
+	order = memcmp(region1.base, region2.base, 2);
 	if (order != 0)
 		order = (order < 0) ? -1 : 1;
 	return (order);