diff --git a/python/tests/test_transformers.py b/python/tests/test_transformers.py
index 5e8c2dba8..3c35445fa 100644
--- a/python/tests/test_transformers.py
+++ b/python/tests/test_transformers.py
@@ -1020,6 +1020,6 @@ def test_transformers_wav2vec2(
 
         predicted_ids = torch.argmax(logits, dim=-1)
         transcription = processor.decode(predicted_ids, output_word_offsets=True)
-        transcription = transcription[0].replace(processor.tokenizer.unk_token, '')
+        transcription = transcription[0].replace(processor.tokenizer.unk_token, "")
 
         assert transcription == expected_transcription[0]