diff --git a/components/watchlist/TradingViewWatchlist.tsx b/components/watchlist/TradingViewWatchlist.tsx
index 2710166..45b76f6 100644
--- a/components/watchlist/TradingViewWatchlist.tsx
+++ b/components/watchlist/TradingViewWatchlist.tsx
@@ -1,7 +1,5 @@
 "use client";
 
-import React, { useEffect, useRef, memo } from 'react';
-import { useTheme } from "next-themes";
 import { formatSymbolForTradingView } from '@/lib/utils';
 
 interface TradingViewWatchlistProps {
diff --git a/lib/utils.ts b/lib/utils.ts
index 9d8362d..183dab7 100644
--- a/lib/utils.ts
+++ b/lib/utils.ts
@@ -160,17 +160,17 @@ export function formatSymbolForTradingView(symbol: string): string {
     
     // Shanghai
     if (upperSymbol.endsWith('.SS')) {
-        return `SSE:${upperSymbol.replace('.SS', '')}`;
+        return `SSE:${upperSymbol.slice(0, -3)}`;
     }
     
     // Shenzhen
     if (upperSymbol.endsWith('.SZ')) {
-        return `SZSE:${upperSymbol.replace('.SZ', '')}`;
+        return `SZSE:${upperSymbol.slice(0, -3)}`;
     }
     
     // Hong Kong
     if (upperSymbol.endsWith('.HK')) {
-        return `HKEX:${upperSymbol.replace('.HK', '')}`;
+        return `HKEX:${upperSymbol.slice(0, -3)}`;
     }
     
     return upperSymbol;