1 files changed, 2 insertions, 3 deletions
diff --git a/packages/contracts/test/exchange/helpers.ts b/packages/contracts/test/exchange/helpers.ts
index 7a267a3e9..ab5419e4f 100644
--- a/packages/contracts/test/exchange/helpers.ts
+++ b/packages/contracts/test/exchange/helpers.ts
@@ -64,17 +64,16 @@ describe('Exchange', () => {
         await tokenTransferProxy.addAuthorizedAddress.sendTransactionAsync(erc20TransferProxyV1.address, {
             from: accounts[0],
         });
-        const nilAddress = '0x0000000000000000000000000000000000000000';
         await assetProxyDispatcher.addAssetProxy.sendTransactionAsync(
             AssetProxyId.ERC20_V1,
             erc20TransferProxyV1.address,
-            nilAddress,
+            ZeroEx.NULL_ADDRESS,
             { from: accounts[0] },
         );
         await assetProxyDispatcher.addAssetProxy.sendTransactionAsync(
             AssetProxyId.ERC20,
             erc20TransferProxy.address,
-            nilAddress,
+            ZeroEx.NULL_ADDRESS,
             { from: accounts[0] },
         );
         const zeroEx = new ZeroEx(provider, { networkId: constants.TESTRPC_NETWORK_ID });