diff --git a/tests/test_metadata/test_v3.py b/tests/test_metadata/test_v3.py
index fe28ec0f0b..817facfecc 100644
--- a/tests/test_metadata/test_v3.py
+++ b/tests/test_metadata/test_v3.py
@@ -11,7 +11,7 @@
 from zarr.core.buffer import default_buffer_prototype
 from zarr.core.chunk_key_encodings import DefaultChunkKeyEncoding, V2ChunkKeyEncoding
 from zarr.core.config import config
-from zarr.core.group import parse_node_type, GroupMetadata
+from zarr.core.group import GroupMetadata, parse_node_type
 from zarr.core.metadata.v3 import (
     ArrayV3Metadata,
     DataType,
@@ -305,11 +305,12 @@ def test_metadata_to_dict(
     assert observed == expected
 
 
-@pytest.mark.parametrize('indent', [2, 4, None])
+@pytest.mark.parametrize("indent", [2, 4, None])
 def test_json_indent(indent: int):
     with config.set({"json_indent": indent}):
         m = GroupMetadata()
         d = m.to_buffer_dict(default_buffer_prototype())["zarr.json"].to_bytes()
+
         class TestIndentEncoder(json.JSONEncoder):
             def __init__(self, *args: Any, **kwargs: Any) -> None:
                 super().__init__(*args, **kwargs)