diff --git a/cubicweb_s3storage/testing.py b/cubicweb_s3storage/testing.py
index 8497cbbef31de68ff4793e51c4ebd5d50c86d9c7_Y3ViaWN3ZWJfczNzdG9yYWdlL3Rlc3RpbmcucHk=..7d9ee6ecb5239d5036ac96d555d00953ae8f8969_Y3ViaWN3ZWJfczNzdG9yYWdlL3Rlc3RpbmcucHk= 100644
--- a/cubicweb_s3storage/testing.py
+++ b/cubicweb_s3storage/testing.py
@@ -4,7 +4,6 @@
 
 
 class S3StorageTestMixin:
-
     s3_bucket = "test-bucket"
 
     def setUp(self):