diff --git a/frontend/app/exchange/page.tsx b/frontend/app/exchange/page.tsx
index 1d45b61..31d112c 100644
--- a/frontend/app/exchange/page.tsx
+++ b/frontend/app/exchange/page.tsx
@@ -255,6 +255,7 @@ export default function ExchangePage() {
 
     setIsBooking(true);
     setError(null);
+    setExistingTradeId(null);
 
     try {
       await api.post<ExchangeResponse>("/api/exchange", {