diff --git a/doc/arm/Bv9ARM-book.xml b/doc/arm/Bv9ARM-book.xml
index 25c81fd6de..9f65bbf995 100644
--- a/doc/arm/Bv9ARM-book.xml
+++ b/doc/arm/Bv9ARM-book.xml
@@ -11506,7 +11506,6 @@ view "external" {
     <optional> ixfr-base <replaceable>string</replaceable> ; </optional>
     <optional> ixfr-from-differences <replaceable>yes_or_no</replaceable>; </optional>
     <optional> ixfr-tmp-file <replaceable>string</replaceable> ; </optional>
-    <optional> request-ixfr <replaceable>yes_or_no</replaceable> ; </optional>
     <optional> maintain-ixfr-base <replaceable>yes_or_no</replaceable> ; </optional>
     <optional> max-ixfr-log-size <replaceable>number</replaceable> ; </optional>
     <optional> max-transfer-idle-out <replaceable>number</replaceable> ; </optional>
@@ -11562,6 +11561,7 @@ zone <replaceable>zone_name</replaceable> <optional><replaceable>class</replacea
     <optional> ixfr-base <replaceable>string</replaceable> ; </optional>
     <optional> ixfr-from-differences <replaceable>yes_or_no</replaceable>; </optional>
     <optional> ixfr-tmp-file <replaceable>string</replaceable> ; </optional>
+    <optional> request-ixfr <replaceable>yes_or_no</replaceable> ; </optional>
     <optional> maintain-ixfr-base <replaceable>yes_or_no</replaceable> ; </optional>
     <optional> masters <optional>port <replaceable>ip_port</replaceable></optional> <optional>dscp <replaceable>ip_dscp</replaceable></optional> { ( <replaceable>masters_list</replaceable> | <replaceable>ip_addr</replaceable>
 			      <optional>port <replaceable>ip_port</replaceable></optional>