diff --git a/python/sglang/srt/entrypoints/openai/serving_chat.py b/python/sglang/srt/entrypoints/openai/serving_chat.py
index 164f3ee48392..657857c3df0a 100644
--- a/python/sglang/srt/entrypoints/openai/serving_chat.py
+++ b/python/sglang/srt/entrypoints/openai/serving_chat.py
@@ -1023,8 +1023,11 @@ def _build_chat_response(
             metadata={"weight_version": ret[0]["meta_info"]["weight_version"]},
         )
         if choices:
+            verification_text = (
+                choices[0].message.content or choices[0].message.reasoning_content
+            )
             chunk.chutes_verification = get_chutes_verification_value(
-                chunk.id, chunk.created, choices[0].message.content
+                chunk.id, chunk.created, verification_text
             )
         return chunk