diff --git a/objets.py b/objets.py
index 1f73c9d..570e9cc 100644
--- a/objets.py
+++ b/objets.py
@@ -1094,6 +1094,9 @@ class proprio(CransLdapObject):
             raise EnvironmentError("Vous n'avez pas le droit de supprimer %s." % self.dn)
         for machine in self.machines():
             machine.delete(comm, login)
+        for facture in self.factures():
+            with facture:
+                facture.delete(comm, login)
         super(proprio, self).delete(comm, login)
 
     def get_mail(self):