--- a/plugins/mod_presence.lua	Thu Jul 26 04:30:30 2012 +0200
+++ b/plugins/mod_presence.lua	Thu Jul 26 04:33:17 2012 +0200
@@ -14,6 +14,7 @@
 local s_find = string.find;
 local tonumber = tonumber;
 
+local core_post_stanza = prosody.core_post_stanza;
 local st = require "util.stanza";
 local jid_split = require "util.jid".split;
 local jid_bare = require "util.jid".bare;