diff --git a/qutebrowser/test/helpers.py b/qutebrowser/test/helpers.py
index 3215239fb..ecb79cbf0 100644
--- a/qutebrowser/test/helpers.py
+++ b/qutebrowser/test/helpers.py
@@ -20,6 +20,7 @@
 import os
 from contextlib import contextmanager
 
+
 @contextmanager
 def environ_set_temp(name, value):
     """Set a temporary environment variable."""
diff --git a/qutebrowser/test/test_helpers.py b/qutebrowser/test/test_helpers.py
index 5792e366f..bde7fd8fb 100644
--- a/qutebrowser/test/test_helpers.py
+++ b/qutebrowser/test/test_helpers.py
@@ -15,14 +15,16 @@
 # You should have received a copy of the GNU General Public License
 # along with qutebrowser.  If not, see <http://www.gnu.org/licenses/>.
 
+# pylint: disable=missing-docstring
+
 """Test test helpers."""
 
 import os
-import unittest
 from unittest import TestCase
 
 from qutebrowser.test.helpers import environ_set_temp
 
+
 class TestEnvironSetTemp(TestCase):
 
     def test_environ_set(self):