1 files changed, 1 insertions, 1 deletions
diff --git a/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts b/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
index 09719b2d8..3e17b756e 100644
--- a/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
@@ -1,6 +1,6 @@
 import { schemas } from '@0xproject/json-schemas';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
-import BigNumber from 'bignumber.js';
+import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
 
 import { artifacts } from '../artifacts';