diff --git a/tests/unit/javascript/test_greasemonkey.py b/tests/unit/javascript/test_greasemonkey.py
index 80285ffca..f3d29608c 100644
--- a/tests/unit/javascript/test_greasemonkey.py
+++ b/tests/unit/javascript/test_greasemonkey.py
@@ -165,6 +165,7 @@ class TestWindowIsolation:
 
     @pytest.fixture
     def setup(self):
+        # pylint: disable=attribute-defined-outside-init
         class SetupData:
             pass
         ret = SetupData()