diff --git a/objets.py b/objets.py
index 2c65f06..bc420f3 100644
--- a/objets.py
+++ b/objets.py
@@ -486,7 +486,7 @@ class proprio(CransLdapObject):
 
     attribs = [attributs.nom, attributs.chbre, attributs.paiement, attributs.info, attributs.blacklist, attributs.controle, attributs.historique]
 
-    def __init__(self, conn, dn, mode='ro', ldif = None, machines=[]):
+    def __init__(self, conn, dn, mode='ro', ldif = None, machines=None):
         super(proprio, self).__init__(conn, dn, mode, ldif)
         self._machines = machines
         
@@ -564,7 +564,7 @@ class proprio(CransLdapObject):
 
     def machines(self):
         """Renvoie la liste des machines"""
-        if not self._machines:
+        if self._machines is None:
             self._machines = self.conn.search('mid=*', dn = self.dn, scope = 1, mode=self.mode)
             for m in self._machines:
                 m._proprio = self
@@ -661,13 +661,27 @@ class adherent(proprio):
                                  ]
     ldap_name = "adherent"
 
-    def __init__(self, conn, dn, mode='ro', ldif = None):
-        super(adherent, self).__init__(conn, dn, mode, ldif)
+    def __init__(self, conn, dn, mode='ro', ldif = None, machines=None, clubs=None, imprimeur_clubs=None):
+        super(adherent, self).__init__(conn, dn, mode, ldif, machine)
         self.full = False
+        self._clubs = clubs
+        self._imprimeur_clubs = imprimeur_clubs
         if u'cransAccount' in [ unicode(o) for o in self['objectClass']]:
             self.attribs = self.attribs + crans_account_attribs
             self.full = True
 
+    def clubs(self):
+        """Renvoie la liste des clubs dont l'adherent est responsable"""
+        if self._clubs is None:
+            self._clubs = self.conn.search('responsable=%s' % self['aid'][0], scope = 1, mode=self.mode)
+        return self._clubs
+
+    def imprimeur_clubs(self):
+        """Renvoie la liste des clubs dont l'adherent est imprimeur"""
+        if self._imprimeur_clubs is None:
+            self._imprimeur_clubs = self.conn.search('imprimeurClub=%s' % self['aid'][0], scope = 1, mode=self.mode)
+        return self._imprimeur_clubs
+
     def compte(self, login = None, uidNumber=0, hash_pass = '', shell=config.login_shell):
         u"""Renvoie le nom du compte crans. S'il n'existe pas, et que uid
         est précisé, le crée."""