diff --git a/llama_stack/providers/remote/inference/nvidia/openai_utils.py b/llama_stack/providers/remote/inference/nvidia/openai_utils.py
index 0f753f80d..43be0fc94 100644
--- a/llama_stack/providers/remote/inference/nvidia/openai_utils.py
+++ b/llama_stack/providers/remote/inference/nvidia/openai_utils.py
@@ -632,7 +632,7 @@ async def convert_openai_completion_stream(
     async for chunk in stream:
         choice = chunk.choices[0]
         yield CompletionResponseStreamChunk(
-            delta=TextDelta(text=choice.text),
+            delta=choice.text,
             stop_reason=_convert_openai_finish_reason(choice.finish_reason),
             logprobs=_convert_openai_completion_logprobs(choice.logprobs),
         )