--- a/plugins/muc/muc.lib.lua	Sun Sep 23 01:11:20 2012 +0500
+++ b/plugins/muc/muc.lib.lua	Tue Sep 25 22:03:35 2012 +0200
@@ -522,7 +522,7 @@
 			end
 		end
 	elseif not current_nick then -- not in room
-		if type == "error" or type == "result" and stanza.name == "iq" then
+		if (type == "error" or type == "result") and stanza.name == "iq" then
 			local id = stanza.attr.id;
 			stanza.attr.from, stanza.attr.to, stanza.attr.id = deconstruct_stanza_id(self, stanza);
 			if stanza.attr.id then