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-rw-r--r--packages/contracts/test/exchange/helpers.ts1
1 files changed, 1 insertions, 0 deletions
diff --git a/packages/contracts/test/exchange/helpers.ts b/packages/contracts/test/exchange/helpers.ts
index 441c1bc28..c3b947983 100644
--- a/packages/contracts/test/exchange/helpers.ts
+++ b/packages/contracts/test/exchange/helpers.ts
@@ -4,6 +4,7 @@ import { BigNumber } from '@0xproject/utils';
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import * as chai from 'chai';
import ethUtil = require('ethereumjs-util');
+import 'make-promises-safe';
import {
ExchangeContract,