--- a/plugins/muc/muc.lib.lua	Sun Jun 13 22:00:08 2010 +0500
+++ b/plugins/muc/muc.lib.lua	Sun Jun 13 22:06:06 2010 +0500
@@ -216,6 +216,7 @@
 		:tag("feature", {var=self:is_members_only() and "muc_membersonly" or "muc_open"}):up()
 		:tag("feature", {var=self:is_persistent() and "muc_persistent" or "muc_temporary"}):up()
 		:tag("feature", {var=self:is_hidden() and "muc_hidden" or "muc_public"}):up()
+		:tag("feature", {var=self._data.whois ~= "anyone" and "muc_semianonymous" or "muc_nonanonymous"}):up()
 	;
 end
 function room_mt:get_disco_items(stanza)