diff --git a/swh/scheduler/tests/common.py b/swh/scheduler/tests/common.py
index 258c80f..eea39b4 100644
--- a/swh/scheduler/tests/common.py
+++ b/swh/scheduler/tests/common.py
@@ -1,95 +1,95 @@
 # Copyright (C) 2017-2019  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 import copy
 import datetime
 
 
 TEMPLATES = {
     "git": {
         "type": "update-git",
         "arguments": {"args": [], "kwargs": {},},
         "next_run": None,
     },
     "hg": {
         "type": "update-hg",
         "arguments": {"args": [], "kwargs": {},},
         "next_run": None,
         "policy": "oneshot",
     },
 }
 
 
 TASK_TYPES = {
     "git": {
         "type": "update-git",
         "description": "Update a git repository",
         "backend_name": "swh.loader.git.tasks.UpdateGitRepository",
         "default_interval": datetime.timedelta(days=64),
         "min_interval": datetime.timedelta(hours=12),
         "max_interval": datetime.timedelta(days=64),
         "backoff_factor": 2,
         "max_queue_length": None,
         "num_retries": 7,
         "retry_delay": datetime.timedelta(hours=2),
     },
     "hg": {
         "type": "update-hg",
         "description": "Update a mercurial repository",
         "backend_name": "swh.loader.mercurial.tasks.UpdateHgRepository",
         "default_interval": datetime.timedelta(days=64),
         "min_interval": datetime.timedelta(hours=12),
         "max_interval": datetime.timedelta(days=64),
         "backoff_factor": 2,
         "max_queue_length": None,
         "num_retries": 7,
         "retry_delay": datetime.timedelta(hours=2),
     },
 }
 
 
 def tasks_from_template(template, max_timestamp, num, num_priority=0, priorities=None):
     """Build tasks from template
 
     """
 
     def _task_from_template(template, next_run, priority, *args, **kwargs):
         ret = copy.deepcopy(template)
         ret["next_run"] = next_run
         if priority:
             ret["priority"] = priority
         if args:
             ret["arguments"]["args"] = list(args)
         if kwargs:
             ret["arguments"]["kwargs"] = kwargs
         return ret
 
     def _pop_priority(priorities):
         if not priorities:
             return None
         for priority, remains in priorities.items():
             if remains > 0:
                 priorities[priority] = remains - 1
                 return priority
         return None
 
     if num_priority and priorities:
         priorities = {
             priority: ratio * num_priority for priority, ratio in priorities.items()
         }
 
     tasks = []
     for i in range(num + num_priority):
         priority = _pop_priority(priorities)
         tasks.append(
             _task_from_template(
                 template,
                 max_timestamp - datetime.timedelta(microseconds=i),
                 priority,
                 "argument-%03d" % i,
-                **{"kwarg%03d" % i: "bogus-kwarg"}
+                **{"kwarg%03d" % i: "bogus-kwarg"},
             )
         )
     return tasks