diff --git a/tests/test_utils.py b/tests/test_utils.py
index 30cd3bc7..dae0748c 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -36,7 +36,7 @@
 pytestmark = pytest.mark.core
 
 
-@pytest.fixture()
+@pytest.fixture
 def docstring() -> str:
     """Generate a docstring with arguments."""
     return """Some class or function.