diff --git a/vllm/engine/output_processor/stop_checker.py b/vllm/engine/output_processor/stop_checker.py
index 316752a2abb87..a43c79b4ea8c9 100644
--- a/vllm/engine/output_processor/stop_checker.py
+++ b/vllm/engine/output_processor/stop_checker.py
@@ -101,11 +101,14 @@ def maybe_stop_sequence(
         # Check if the last ngram is repeated in the output text.
         last_token = seq.output_text[-new_char_count:]
         # start checking for repetition after the first 32 tokens
-        if seq.get_output_len() > 32 and self.check_ngram_repetition(seq, sampling_params, last_token):
+        if seq.get_output_len() > 32 and self.check_ngram_repetition(
+                seq, sampling_params, last_token):
             seq.status = SequenceStatus.FINISHED_REPEATED
             return
 
-    def check_ngram_repetition(self, seq: Sequence, sampling_params: SamplingParams, last_token: str) -> bool:
+    def check_ngram_repetition(self, seq: Sequence,
+                               sampling_params: SamplingParams,
+                               last_token: str) -> bool:
         """Check if the last ngram is repeated in the output text.
         """
 
@@ -164,8 +167,6 @@ def check_ngram_repetition(self, seq: Sequence, sampling_params: SamplingParams,
 
         return is_done
 
-
-
     @staticmethod
     def check_stop_strings(
         output_text: str,