diff --git a/lc_ldap.py b/lc_ldap.py
index 49e11e7..8c136a4 100644
--- a/lc_ldap.py
+++ b/lc_ldap.py
@@ -168,10 +168,10 @@ class lc_ldap(ldap.ldapobject.LDAPObject, object):
         # On définit de nouveaux dn si ceux-ci sont déjà pris
         try:
             if self.search(dn=dn):
-                for id in ["aid", "mid", "fid", "cid"]:
+                for id in ["aid", "mid", "fid", "cid", "xid"]:
                     if dn.startswith("%s=" % id):
                         ldif[id]=[str(self._find_id(id))]
-                        dn="%s=%s,%s" % (id, ldif['aid'][0], dn.split(',',1)[1])
+                        dn="%s=%s,%s" % (id, ldif[id][0], dn.split(',',1)[1])
         except ldap.NO_SUCH_OBJECT:
             pass
         obj = objets.new_cransldapobject(self, dn, mode='rw', uldif=ldif_to_uldif(ldif))