diff --git a/tests/deploy.TestCase b/tests/deploy.TestCase
index 0aafb1c2..dee28340 100755
--- a/tests/deploy.TestCase
+++ b/tests/deploy.TestCase
@@ -990,9 +990,7 @@ class DeployTest(unittest.TestCase):
             call_iteration += 1
             return 0
 
-        with mock.patch(
-            'subprocess.call', side_effect=update_servergitmirrors_call
-        ):
+        with mock.patch('subprocess.call', side_effect=update_servergitmirrors_call):
             fdroidserver.deploy.update_servergitmirrors([], repo_section)
         self.assertEqual(call_iteration, 1, 'expected 1 invocations of subprocess.call')
 
@@ -1025,7 +1023,6 @@ class DeployTest(unittest.TestCase):
         with fake_index.open('w') as fp:
             fp.write('not an index, but has the right filename')
 
-
         def update_servergitmirrors_call(cmd):
             nonlocal call_iteration
             if call_iteration == 0:
@@ -1059,9 +1056,7 @@ class DeployTest(unittest.TestCase):
             call_iteration += 1
             return 0
 
-        with mock.patch(
-            'subprocess.call', side_effect=update_servergitmirrors_call
-        ):
+        with mock.patch('subprocess.call', side_effect=update_servergitmirrors_call):
             fdroidserver.deploy.update_servergitmirrors([], repo_section)
         self.assertEqual(call_iteration, 1, 'expected 1 invocations of subprocess.call')