diff --git a/tailbone/views/datasync.py b/tailbone/views/datasync.py
index 3a691218..ac0fec52 100644
--- a/tailbone/views/datasync.py
+++ b/tailbone/views/datasync.py
@@ -286,7 +286,7 @@ class DataSyncThreadView(MasterView):
                         if consumer['enabled']:
                             consumers.append(ckey)
                         settings.extend([
-                            {'name': 'rattail.datasync.{}.consumer.spec.{}'.format(pkey, ckey),
+                            {'name': f'rattail.datasync.{pkey}.consumer.{ckey}.spec',
                              'value': consumer['consumer_spec']},
                             {'name': 'rattail.datasync.{}.consumer.{}.db'.format(pkey, ckey),
                              'value': consumer['consumer_dbkey']},