diff --git a/spacy/tests/tokenizer/test_tokenizer.py b/spacy/tests/tokenizer/test_tokenizer.py
index ed11508b4..b27af6bcd 100644
--- a/spacy/tests/tokenizer/test_tokenizer.py
+++ b/spacy/tests/tokenizer/test_tokenizer.py
@@ -529,7 +529,7 @@ def test_tokenizer_initial_special_case_explain(en_vocab):
         token_match=re.compile("^id$").match,
         rules={
             "id": [{"ORTH": "i"}, {"ORTH": "d"}],
-        }
+        },
     )
     tokens = [t.text for t in tokenizer("id")]
     explain_tokens = [t[1] for t in tokenizer.explain("id")]