diff --git a/tests/unit/test_app.py b/tests/unit/test_app.py
index 7f40cb891..ecb3ec46e 100644
--- a/tests/unit/test_app.py
+++ b/tests/unit/test_app.py
@@ -23,6 +23,7 @@ from PyQt5.QtCore import QBuffer
 
 from qutebrowser import app
 
+
 def test_on_focus_changed_issue1484(monkeypatch, qapp, caplog):
     """Check what happens when on_focus_changed is called with wrong args.