diff --git a/index.xml b/index.xml
index f03170313..1fece24d9 100644
--- a/index.xml
+++ b/index.xml
@@ -57,6 +57,7 @@
 <!ENTITY c1-ma-subscribe SYSTEM "intel/chapter1/subscribe.xml">
 <!ENTITY c1-ma-unsubscribe SYSTEM "intel/chapter1/unsubscribe.xml">
 <!ENTITY c1-ma-mailarchive SYSTEM "intel/chapter1/mailarchive.xml">
+<!ENTITY c1-ma-othermodes SYSTEM "intel/chapter1/othermodes.xml">
 <!ENTITY c1-contactinfo SYSTEM "intel/chapter1/contactinfo.xml">
 
 <!ENTITY chapter2 SYSTEM "intel/chapter2/chapter2.xml">