diff --git a/services/openclaw_strategist_service.py b/services/openclaw_strategist_service.py
index 30a9f50..cc1adc9 100644
--- a/services/openclaw_strategist_service.py
+++ b/services/openclaw_strategist_service.py
@@ -350,7 +350,7 @@ def _send_data_stale_alert(report_type: str, last_date: str, period: str) -> boo
             WHERE insight_type = 'data_stale_alert'
               AND created_by = 'openclaw'
               AND created_at >= NOW() - INTERVAL '24 hours'
-              AND metadata_json->>'report_type' = :rt
+              AND metadata_json::jsonb->>'report_type' = :rt
             ORDER BY created_at DESC
             LIMIT 1
         """), {"rt": report_type}).fetchone()