diff --git a/backend/open_webui/config.py b/backend/open_webui/config.py
index f213dcf5e..cf5aa6324 100644
--- a/backend/open_webui/config.py
+++ b/backend/open_webui/config.py
@@ -1364,6 +1364,9 @@ Generate a concise, 3-5 word title with an emoji summarizing the chat history.
 - Use emojis that enhance understanding of the topic, but avoid quotation marks or special formatting.
 - Write the title in the chat's primary language; default to English if multilingual.
 - Prioritize accuracy over excessive creativity; keep it clear and simple.
+- Your entire response must consist solely of the JSON object, without any introductory or concluding text.
+- The output must be a single, raw JSON object, without any markdown code fences or other encapsulating text.
+- Ensure no conversational text, affirmations, or explanations precede or follow the raw JSON output, as this will cause direct parsing failure.
 ### Output:
 JSON format: { "title": "your concise title here" }
 ### Examples: