diff --git a/bin/named/named.conf.docbook b/bin/named/named.conf.docbook
index 4416b1e32a..fefd3890c8 100644
--- a/bin/named/named.conf.docbook
+++ b/bin/named/named.conf.docbook
@@ -380,6 +380,7 @@ options {
zero-no-soa-ttl boolean;
zero-no-soa-ttl-cache boolean;
dnssec-secure-to-insecure boolean;
+ automatic-interface-scan boolean;
cookie-algorithm ( aes | sha1 | sha256 );
cookie-secret string;