diff --git a/doc/arm/Bv9ARM-book.xml b/doc/arm/Bv9ARM-book.xml
index ff7a4960c9..0a621309bc 100644
--- a/doc/arm/Bv9ARM-book.xml
+++ b/doc/arm/Bv9ARM-book.xml
@@ -18,7 +18,7 @@
  - PERFORMANCE OF THIS SOFTWARE.
 -->
 
-<!-- File: $Id: Bv9ARM-book.xml,v 1.420 2009/07/10 01:22:18 jreed Exp $ -->
+<!-- File: $Id: Bv9ARM-book.xml,v 1.421 2009/07/14 18:08:26 jreed Exp $ -->
 <book xmlns:xi="http://www.w3.org/2001/XInclude">
   <title>BIND 9 Administrator Reference Manual</title>
 
@@ -4937,7 +4937,7 @@ badresp:1,adberr:0,findfail:0,valfail:0]
     <optional> lame-ttl <replaceable>number</replaceable>; </optional>
     <optional> max-ncache-ttl <replaceable>number</replaceable>; </optional>
     <optional> max-cache-ttl <replaceable>number</replaceable>; </optional>
-    <optional> sig-validity-interval <replaceable>number</replaceable> ; </optional>
+    <optional> sig-validity-interval <replaceable>number</replaceable> <optional><replaceable>number</replaceable></optional> ; </optional>
     <optional> sig-signing-nodes <replaceable>number</replaceable> ; </optional>
     <optional> sig-signing-signatures <replaceable>number</replaceable> ; </optional>
     <optional> sig-signing-type <replaceable>number</replaceable> ; </optional>
@@ -9151,7 +9151,7 @@ view "external" {
     <optional> notify-source (<replaceable>ip4_addr</replaceable> | <constant>*</constant>) <optional>port <replaceable>ip_port</replaceable></optional> ; </optional>
     <optional> notify-source-v6 (<replaceable>ip6_addr</replaceable> | <constant>*</constant>) <optional>port <replaceable>ip_port</replaceable></optional> ; </optional>
     <optional> zone-statistics <replaceable>yes_or_no</replaceable> ; </optional>
-    <optional> sig-validity-interval <replaceable>number</replaceable> ; </optional>
+    <optional> sig-validity-interval <replaceable>number</replaceable> <optional><replaceable>number</replaceable></optional> ; </optional>
     <optional> sig-signing-nodes <replaceable>number</replaceable> ; </optional>
     <optional> sig-signing-signatures <replaceable>number</replaceable> ; </optional>
     <optional> sig-signing-type <replaceable>number</replaceable> ; </optional>