diff --git a/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts
index 2c517502a6..8548a06b63 100644
--- a/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts
+++ b/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts
@@ -2,7 +2,7 @@ import { schemas } from '@0xproject/json-schemas';
 import { formatters, getOrderHashHex, OrderStateUtils } from '@0xproject/order-utils';
 import {
     BlockParamLiteral,
-    ContractAbi
+    ContractAbi,
     DecodedLogArgs,
     ECSignature,
     ExchangeContractErrs,