--- a/plugins/muc/muc.lib.lua	Wed Dec 19 16:54:07 2018 +0000
+++ b/plugins/muc/muc.lib.lua	Wed Dec 19 23:14:13 2018 +0000
@@ -61,7 +61,7 @@
 	elseif event.affiliation_rank >= valid_affiliations.none then
 		return "participant";
 	end
-end);
+end, -1);
 
 --- Occupant functions
 function room_mt:new_occupant(bare_real_jid, nick)