diff --git a/funlib/persistence/arrays/datasets.py b/funlib/persistence/arrays/datasets.py
index 4241bcd..f9a4fad 100644
--- a/funlib/persistence/arrays/datasets.py
+++ b/funlib/persistence/arrays/datasets.py
@@ -287,9 +287,9 @@ def _read_attrs(ds, order="C"):
     dims = len(ds.shape)
     dims = dims if dims <= 3 else 3
     if voxel_size is not None and offset is not None and units is not None:
-        if order == "F" or isinstance(ds.store, (zarr.n5.N5Store,zarr.n5.N5FSStore)):
+        if order == "F" or isinstance(ds.store, (zarr.n5.N5Store, zarr.n5.N5FSStore)):
             return voxel_size[::-1], offset[::-1], units[::-1]
-        else:    
+        else:
             return voxel_size, offset, units
     elif voxel_size is None:
         voxel_size = (1,) * dims
diff --git a/tests/test_datasets.py b/tests/test_datasets.py
index 56001e7..af38296 100644
--- a/tests/test_datasets.py
+++ b/tests/test_datasets.py
@@ -28,7 +28,7 @@ def test_metadata_n5():
             "ordering": "C",
             "scale": [5.3, 4.3, 3.3],
             "translate": [4.3, 3.3, 2.3],
-            "units": ["nm", "nm", "nm"]
+            "units": ["nm", "nm", "nm"],
         },
     }
     return metadata_n5