diff --git a/lc_ldap.py b/lc_ldap.py
index 8aeea15..8d9f0a6 100644
--- a/lc_ldap.py
+++ b/lc_ldap.py
@@ -569,7 +569,7 @@ class lc_ldap(ldap.ldapobject.LDAPObject, object):
             club = obj
             if isinstance(obj, objets.machine) or isinstance(obj, objets.facture):
                 club = obj.proprio()
-            if isinstance(club, objets.club) and "aid=" + str(club['responsable'][0]) + "," + variables.base_dn == self.dn:
+            if isinstance(club, objets.club) and "aid=" + str(club.get('responsable', [''])[0]) + "," + variables.base_dn == self.dn:
                 return [attributs.respo]
             return []