diff --git a/tests/layout_non_alignment_test.py b/tests/layout_non_alignment_test.py
index 096c440..48082a8 100644
--- a/tests/layout_non_alignment_test.py
+++ b/tests/layout_non_alignment_test.py
@@ -7,7 +7,7 @@
 
 
 @pytest.fixture
-def base_dir(metrics_dir: pathlib.Path) -> str:
+def base_dir(metrics_dir: pathlib.Path) -> pathlib.Path:
     return metrics_dir / "layout_non_alignment"