diff --git a/contracts/coordinator/test/coordinator.ts b/contracts/coordinator/test/coordinator.ts
index 4ed44c9c6f..6cc5154ccb 100644
--- a/contracts/coordinator/test/coordinator.ts
+++ b/contracts/coordinator/test/coordinator.ts
@@ -79,7 +79,6 @@ describe('Coordinator tests', () => {
             exchangeArtifacts.Exchange,
             provider,
             txDefaults,
-            assetDataUtils.encodeERC20AssetData(zrxToken.address),
             new BigNumber(chainId),
         );
 
diff --git a/contracts/coordinator/test/mixins.ts b/contracts/coordinator/test/mixins.ts
index c6bb878ee3..e35a74d5dc 100644
--- a/contracts/coordinator/test/mixins.ts
+++ b/contracts/coordinator/test/mixins.ts
@@ -68,6 +68,8 @@ describe('Mixins tests', () => {
             takerAssetAmount: constants.ZERO_AMOUNT,
             makerFee: constants.ZERO_AMOUNT,
             takerFee: constants.ZERO_AMOUNT,
+            makerFeeAssetData: constants.NULL_BYTES,
+            takerFeeAssetData: constants.NULL_BYTES,
             expirationTimeSeconds: constants.ZERO_AMOUNT,
             salt: constants.ZERO_AMOUNT,
             signature: constants.NULL_BYTES,