diff --git a/qutebrowser/test/utils/debug/test_signal.py b/qutebrowser/test/utils/debug/test_signal.py
index 4bea5bf6d..32d994e78 100644
--- a/qutebrowser/test/utils/debug/test_signal.py
+++ b/qutebrowser/test/utils/debug/test_signal.py
@@ -27,6 +27,7 @@ from qutebrowser.utils import debug
 
 @pytest.fixture
 def signal():
+    """Fixture to provide a faked pyqtSignal."""
     return stubs.FakeSignal()