diff --git a/freeradius/auth.py b/freeradius/auth.py
old mode 100755
new mode 100644
index 4dba62d8..9a9b2d2d
--- a/freeradius/auth.py
+++ b/freeradius/auth.py
@@ -19,7 +19,7 @@
 # Voir des exemples plus complets ici:
 # https://github.com/FreeRADIUS/freeradius-server/blob/master/src/modules/rlm_python/
 
-from lc_ldap.shortcuts import with_ldap_conn
+from lc_ldap.shortcuts import with_ldap_conn, lc_ldap_anonymous
 from lc_ldap.crans_utils import escape as escape_ldap
 from gestion.config.config import vlans
 import lc_ldap.objets
@@ -63,7 +63,7 @@ def get_machines(auth_data, conn):
                 (base, username, username))
 
 # Decorateur utilisé plus tard (same connection)
-use_ldap = with_ldap_conn(retries=2, delay=5)
+use_ldap = with_ldap_conn(retries=2, delay=5, constructor=lc_ldap_anonymous)
 
 @use_ldap
 def instantiate(p, conn):