diff --git a/tests/series/__init__.py b/tests/test_series/__init__.py
similarity index 100%
rename from tests/series/__init__.py
rename to tests/test_series/__init__.py
diff --git a/tests/series/series.py b/tests/test_series/series.py
similarity index 99%
rename from tests/series/series.py
rename to tests/test_series/series.py
index 01f3fdf1fbe56b7c7431aff5e29124c8afb64057..1ee2f7d0360d029689c5aaab87656e585a0a990f 100644
--- a/tests/series/series.py
+++ b/tests/test_series/series.py
@@ -4,6 +4,7 @@ import six
 import unittest
 from firanka.series import DataSeries
 
+
 class TestSeries(unittest.TestCase):
     def test_ds(self):