diff --git a/users/models.py b/users/models.py
index fe96df1e..e4c25956 100755
--- a/users/models.py
+++ b/users/models.py
@@ -696,7 +696,8 @@ class User(RevMixin, FieldPermissionModelMixin, AbstractBaseUser,
     def autoregister_machine(self, mac_address, nas_type):
         """ Fonction appellée par freeradius. Enregistre la mac pour
         une machine inconnue sur le compte de l'user"""
-        if Machine.can_create(self):
+        allowed, _message = Machine.can_create(self, self.id)
+        if not allowed:
             return False, _("Maximum number of registered machines reached.")
         if not nas_type:
             return False, _("Re2o doesn't know wich machine type to assign.")