diff --git a/xep-0408.xml b/xep-0408.xml
index 83b8ee58..d434e585 100644
--- a/xep-0408.xml
+++ b/xep-0408.xml
@@ -91,9 +91,9 @@
         category='conference'
         name='Shakespearean Chat Service'
         type='text'/>
-    <feature var='urn:xmpp:mix:core:0'/>
+    <feature var='urn:xmpp:mix:core:1'/>
     <feature var='http://jabber.org/protocol/muc'/>
-    <feature var='urn:xmpp:mix:core:0#searchable'/>
+    <feature var='urn:xmpp:mix:core:1#searchable'/>
   </query>
 </iq>
 ]]></example>
@@ -121,7 +121,7 @@
         category='conference'
         name='Shakespearean Chat Service'
         type='text'/>
-    <feature var='urn:xmpp:mix:core:0'/>
+    <feature var='urn:xmpp:mix:core:1'/>
     <x xmlns='jabber:x:data' type='result'>
       <field var='FORM_TYPE' type='hidden'>
         <value>urn:xmpp:mix:muc:0#muc-mirror</value>