diff --git a/atlasbot/llm/prompts.py b/atlasbot/llm/prompts.py
index 0bacee4..fcb3caf 100644
--- a/atlasbot/llm/prompts.py
+++ b/atlasbot/llm/prompts.py
@@ -245,6 +245,8 @@ GAP_SYSTEM = (
 
 EVIDENCE_GAP_PROMPT = (
     "Return JSON with field: note (string). "
+    "If information is missing, note must be one sentence starting with "
+    "'The answer would benefit from' and list concrete missing data. "
     "If nothing is missing, return empty note."
 )