--- a/taskcluster/taskgraph/actions/backfill.py
+++ b/taskcluster/taskgraph/actions/backfill.py
@@ -20,16 +20,18 @@ PUSHLOG_TMPL = '{}/json-pushes?version=2
 INDEX_TMPL = 'gecko.v2.{}.pushlog-id.{}.decision'
 
 logger = logging.getLogger(__name__)
 
 
 @register_callback_action(
     title='Backfill',
     name='backfill',
+    kind='hook',
+    generic=True,
     symbol='Bk',
     description=('Take the label of the current task, '
                  'and trigger the task with that label '
                  'on previous pushes in the same project.'),
     order=0,
     context=[{}],  # This will be available for all tasks
     schema={
         'type': 'object',