diff --git a/selfprivacy_api/backup/tasks.py b/selfprivacy_api/backup/tasks.py
index a948bff..6520c70 100644
--- a/selfprivacy_api/backup/tasks.py
+++ b/selfprivacy_api/backup/tasks.py
@@ -18,8 +18,6 @@ from selfprivacy_api.backup import Backups
 from selfprivacy_api.jobs import Jobs, JobStatus, Job
 
 
-SNAPSHOT_CACHE_TTL_HOURS = 6
-
 SNAPSHOT_CACHE_TTL_HOURS = 6
 
 
@@ -35,9 +33,7 @@ def validate_datetime(dt: datetime) -> bool:
 
 # huey tasks need to return something
 @huey.task()
-def start_backup(
-    service_id: str, reason: BackupReason = BackupReason.EXPLICIT
-) -> bool:
+def start_backup(service_id: str, reason: BackupReason = BackupReason.EXPLICIT) -> bool:
     """
     The worker task that starts the backup process.
     """