From 8ae90aec0e42e63fdb63460dc80ccb30a0ff4617 Mon Sep 17 00:00:00 2001
From: Dan J Miller <danjm.com@gmail.com>
Date: Tue, 2 Nov 2021 05:53:12 -0230
Subject: [PATCH] Ensure exchange rate is stringified before passing to
 bignumber in confirm-token-transaction component (#12550)

---
 .../confirm-token-transaction-base.component.js               | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ui/pages/confirm-token-transaction-base/confirm-token-transaction-base.component.js b/ui/pages/confirm-token-transaction-base/confirm-token-transaction-base.component.js
index 90180b23e..83c08928e 100644
--- a/ui/pages/confirm-token-transaction-base/confirm-token-transaction-base.component.js
+++ b/ui/pages/confirm-token-transaction-base/confirm-token-transaction-base.component.js
@@ -35,7 +35,9 @@ export default function ConfirmTokenTransactionBase({
     }
 
     const decimalEthValue = new BigNumber(tokenAmount)
-      .times(new BigNumber(contractExchangeRate))
+      .times(
+        new BigNumber(contractExchangeRate ? String(contractExchangeRate) : 0),
+      )
       .toFixed();
 
     return getWeiHexFromDecimalValue({