diff --git a/vllm/entrypoints/openai/speech_to_text.py b/vllm/entrypoints/openai/speech_to_text.py
index b9b9b1ab30ad..3dece07748cc 100644
--- a/vllm/entrypoints/openai/speech_to_text.py
+++ b/vllm/entrypoints/openai/speech_to_text.py
@@ -201,10 +201,10 @@ async def _create_speech_to_text(
                 self.engine_client.generate(
                     prompt,
                     sampling_params,
-                    request_id,
+                    f"{request_id}_{i}",
                     lora_request=lora_request,
                 )
-                for prompt in prompts
+                for i, prompt in enumerate(prompts)
             ]
         except ValueError as e:
             # TODO: Use a vllm-specific Validation Error