diff --git a/xep-0369.xml b/xep-0369.xml
index 9122acd7..f6bbf90b 100644
--- a/xep-0369.xml
+++ b/xep-0369.xml
@@ -2265,7 +2265,11 @@ the participant is not be subscribed to all nodes associated with the channel (i
 ]]></example>
     
     <p>
-      When sending roster information to a client that advertises MIX capability, the server MUST return all MIX channels and MUST use this encoding.   Where a client does not advertize MIX capability, the server MUST NOT return MIX channels as roster items.
+      When sending roster information to a client that advertises MIX capability, the server MUST return all MIX channels and MUST use this encoding.  Presence  of MIX roster items MUST be set to offline (unavailable).
+    </p>
+    
+    <p>
+      Where a client does not advertize MIX capability, the server MAY choose to not return MIX channels as roster items.   If this is done care needs to be taken, in particular around support of roster versioning  &xep0237;.
     </p>
     
   </section2>