diff --git a/packages/bridge-ui/src/utils/toBigNumber.spec.ts b/packages/bridge-ui/src/utils/toBigNumber.spec.ts
index d9f56c187cc..2fbba2c326b 100644
--- a/packages/bridge-ui/src/utils/toBigNumber.spec.ts
+++ b/packages/bridge-ui/src/utils/toBigNumber.spec.ts
@@ -8,5 +8,8 @@ describe('toBigNumber', () => {
     expect(toBigNumber(2e+21).toString()).toEqual('2000000000000000000000');
     expect(toBigNumber(3e21).toString()).toEqual('3000000000000000000000');
     expect(toBigNumber(1000).toString()).toEqual('1000');
+
+    // Number.MAX_SAFE_INTEGER = 9007199254740991. Maximum safe integer (2^53 – 1)
+    expect(toBigNumber(BigInt(Number.MAX_SAFE_INTEGER) * 3n).toString()).toEqual('27021597764222973');
   });
 });