diff --git a/vllm/v1/engine/detokenizer.py b/vllm/v1/engine/detokenizer.py
index dca327cc5d07..579b3895bb71 100644
--- a/vllm/v1/engine/detokenizer.py
+++ b/vllm/v1/engine/detokenizer.py
@@ -160,20 +160,7 @@ def __init__(self, tokenizer: PreTrainedTokenizerFast,
             skip_special_tokens=sampling_params.skip_special_tokens)
 
         self.tokenizer: Tokenizer = tokenizer._tokenizer
-
-        # Find a safe place to start.
-        prompt_suffix = request.prompt_token_ids
-        prompt_len = len(prompt_suffix)
-        if prompt_len > 4:
-            for i in range(4, min(prompt_len + 1, 24)):
-                suffix = request.prompt_token_ids[-i:]
-                if '�' not in self.tokenizer.decode(suffix):
-                    prompt_suffix = suffix
-                    break
-
-        # Prime the stream.
-        for tid in prompt_suffix:
-            self.stream.step(self.tokenizer, tid)
+        self.stream.step(self.tokenizer, request.prompt_token_ids)
 
         self.spaces_between_special_tokens = (
             sampling_params.skip_special_tokens