Unpop byte rather than making deep copy

1 files changed, 3 insertions, 8 deletions

diff --git a/packages/contracts/src/utils/formatters.ts b/packages/contracts/src/utils/formatters.ts
index b25dec27c..32e4787d6 100644
--- a/packages/contracts/src/utils/formatters.ts
+++ b/packages/contracts/src/utils/formatters.ts
@@ -2,6 +2,7 @@ import { SignedOrder } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
 
+import { constants } from './constants';
 import { orderUtils } from './order_utils';
 import { BatchCancelOrders, BatchFillOrders, MarketBuyOrders, MarketSellOrders } from './types';
 
@@ -31,10 +32,7 @@ export const formatters = {
         _.forEach(signedOrders, (signedOrder, i) => {
             const orderWithoutExchangeAddress = orderUtils.getOrderWithoutExchangeAddress(signedOrder);
             if (i !== 0) {
-                orderWithoutExchangeAddress.takerAssetData = `0x${_.repeat(
-                    '0',
-                    signedOrders[0].takerAssetData.length - 2,
-                )}`;
+                orderWithoutExchangeAddress.takerAssetData = constants.NULL_BYTES;
             }
             marketSellOrders.orders.push(orderWithoutExchangeAddress);
             marketSellOrders.signatures.push(signedOrder.signature);
@@ -50,10 +48,7 @@ export const formatters = {
         _.forEach(signedOrders, (signedOrder, i) => {
             const orderWithoutExchangeAddress = orderUtils.getOrderWithoutExchangeAddress(signedOrder);
             if (i !== 0) {
-                orderWithoutExchangeAddress.makerAssetData = `0x${_.repeat(
-                    '0',
-                    signedOrders[0].makerAssetData.length - 2,
-                )}`;
+                orderWithoutExchangeAddress.makerAssetData = constants.NULL_BYTES;
             }
             marketBuyOrders.orders.push(orderWithoutExchangeAddress);
             marketBuyOrders.signatures.push(signedOrder.signature);