diff --git a/worker_plan/worker_plan_internal/plan/review_plan.py b/worker_plan/worker_plan_internal/plan/review_plan.py
index 61810449..4034b604 100644
--- a/worker_plan/worker_plan_internal/plan/review_plan.py
+++ b/worker_plan/worker_plan_internal/plan/review_plan.py
@@ -49,6 +49,8 @@ class DocumentDetails(BaseModel):
 Do not include any extra bullet points, header lines, or any additional text outside of this JSON structure.
 
 Do not duplicate issues already identified in previous questions of this review.
+
+Output ONLY the JSON object. Do not include any thinking process, reasoning steps, or analysis before the JSON. Begin your response immediately with the opening brace {.
 """
 
 @dataclass