diff --git a/services/aggregation/worker.py b/services/aggregation/worker.py
index a3ca6d0..2f9ce1d 100644
--- a/services/aggregation/worker.py
+++ b/services/aggregation/worker.py
@@ -460,7 +460,7 @@ def assemble_trend_with_evidence(
 
 _UPSERT_TREND = """
 INSERT INTO trend_windows (
-    entity_type, entity_id, window, trend_direction, trend_strength,
+    entity_type, entity_id, "window", trend_direction, trend_strength,
     confidence, top_supporting_evidence, top_opposing_evidence,
     dominant_catalysts, material_risks, contradiction_score,
     disagreement_details, market_context, generated_at