diff --git a/metagpt/actions/write_prd_an.py b/metagpt/actions/write_prd_an.py
index 6a995e184..a33685cd3 100644
--- a/metagpt/actions/write_prd_an.py
+++ b/metagpt/actions/write_prd_an.py
@@ -165,7 +165,7 @@ ANYTHING_UNCLEAR = ActionNode(
     key="Anything UNCLEAR",
     expected_type=str,
     instruction="Mention any aspects of the project that are unclear and try to clarify them.",
-    example="",
+    example="Currently, all aspects of the project are clear.",
 )
 
 ISSUE_TYPE = ActionNode(