diff --git a/frontend/src/components/tradeNotification/TradeSignalMiniChart.tsx b/frontend/src/components/tradeNotification/TradeSignalMiniChart.tsx
index a6a6cf4..604e968 100644
--- a/frontend/src/components/tradeNotification/TradeSignalMiniChart.tsx
+++ b/frontend/src/components/tradeNotification/TradeSignalMiniChart.tsx
@@ -157,10 +157,7 @@ const TradeSignalMiniChart: React.FC<Props> = ({
       onNewCandle: handleNewCandle,
       enabled: enabled && useUpbit,
       source: chartRealtimeSource,
-      deepObvHistory: false,
-      // OBV 있을 때: 200봉만 가져오면 OBV가 0부터 시작 → 신호선과 시각적 발산 보장
-      // WARMUP_COUNT(600) 불필요 — 미니차트 지표(OBV SMA-9, W%R 등)는 짧은 웜업으로 충분
-      fetchCount: needsDeepObv ? 200 : undefined,
+      deepObvHistory: needsDeepObv,
     }), [handleTickUpdate, handleNewCandle, enabled, useUpbit, needsDeepObv, chartRealtimeSource]),
   );