diff --git a/src/common/gajim.py b/src/common/gajim.py
index e4d65e584..9f488fa63 100644
--- a/src/common/gajim.py
+++ b/src/common/gajim.py
@@ -134,7 +134,7 @@ def get_real_jid_from_fjid(account, fjid):
 	if not nick: # It's not a fake_jid, it is a real jid
 		return fjid # we return the real jid
 	real_jid = fjid
-	gcs = interface.windows[account]['gc']
+	gcs = interface.instances[account]['gc']
 	if gcs.has_key(room_jid):
 		# It's a pm, so if we have real jid it's in contact.jid
 		if not gc_contacts[account][room_jid].has_key(nick):