diff --git a/xep-0405.xml b/xep-0405.xml
index 7f59e9f8..169cf435 100644
--- a/xep-0405.xml
+++ b/xep-0405.xml
@@ -38,6 +38,12 @@
   <shortname>MIX-PAM</shortname>
   &ksmithisode;
   &skille;
+  <revision>
+    <version>0.4.1</version>
+    <date>2019-04-30</date>
+    <initials>lnj</initials>
+    <remark>Fix typo in the #archive namespace</remark>
+  </revision>
   <revision>
     <version>0.4.0</version>
     <date>2019-03-19</date>
@@ -209,7 +215,7 @@ This approach  enables flexible support of multiple clients for a MIX channel pa
     type='result'>
   <query xmlns='http://jabber.org/protocol/disco#info'>
     <feature var='urn:xmpp:mix:pam:1'/>
-    <feature var='urn:xmpp:mix:pam:1:archive'/>
+    <feature var='urn:xmpp:mix:pam:1#archive'/>
   </query>
 </iq>
 ]]></example>