diff --git a/metagpt/prompts/di/role_zero.py b/metagpt/prompts/di/role_zero.py
index 765825198..ef71f5f85 100644
--- a/metagpt/prompts/di/role_zero.py
+++ b/metagpt/prompts/di/role_zero.py
@@ -133,7 +133,9 @@ For requests that are unclear, lack sufficient detail, or are outside the system
 
 {examples}
 
-Respond with a concise thought, then provide the appropriate response category: QUICK, SEARCH, TASK, or AMBIGUOUS. Your response:
+Respond with a concise thought, then provide the appropriate response category: QUICK, SEARCH, TASK, or AMBIGUOUS. 
+You should **only** provide the thought, response category, and nothing else.
+Your response:
 """