diff --git a/grid5000/objects.py b/grid5000/objects.py
index 9f3466126f341919708665def55f18f3d18dc867..9435c37ad2362e8f09085e462ca5041651c552d6 100644
--- a/grid5000/objects.py
+++ b/grid5000/objects.py
@@ -84,9 +84,7 @@ class Cluster(RESTObject):
 
 class Job(RESTObject, RefreshMixin, ObjectDeleteMixin):
     _create_attrs = (("command"),)
-    _managers = (
-        ("firewall", "SiteJobFirewallManager"),
-    )
+    _managers = (("firewall", "SiteJobFirewallManager"),)
 
     def __repr__(self):
         keys = ["uid", "site", "state", "user"]