diff --git a/extra/modules/callback.py b/extra/modules/callback.py
index ec56a5d..8bf7c3d 100644
--- a/extra/modules/callback.py
+++ b/extra/modules/callback.py
@@ -68,7 +68,7 @@ class BatchJob(StorableObject):
                 # Never saved ? Ok
                 pass
 
-    def __call__(self):
+    def __call__(self, job=None):
         self.do()
 
     def __str__(self):