diff --git a/py/desitarget/test/test_mtl_streams.py b/py/desitarget/test/test_mtl_streams.py
index b3428255..2c9ce23e 100644
--- a/py/desitarget/test/test_mtl_streams.py
+++ b/py/desitarget/test/test_mtl_streams.py
@@ -17,6 +17,7 @@
 from desiutil.log import get_logger
 log = get_logger()
 
+
 class TestMTLStreams(unittest.TestCase):
 
     def setUp(self):