4 files changed, 6 insertions, 11 deletions
diff --git a/packages/order-utils/src/rate_utils.ts b/packages/order-utils/src/rate_utils.ts
index 72d11584a..e82c03873 100644
--- a/packages/order-utils/src/rate_utils.ts
+++ b/packages/order-utils/src/rate_utils.ts
@@ -1,7 +1,6 @@
 import { schemas } from '@0xproject/json-schemas';
 import { SignedOrder } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
-import * as _ from 'lodash';
 
 import { assert } from './assert';
 import { constants } from './constants';
diff --git a/packages/order-utils/src/sorting_utils.ts b/packages/order-utils/src/sorting_utils.ts
index 8424060fc..f019aa4a8 100644
--- a/packages/order-utils/src/sorting_utils.ts
+++ b/packages/order-utils/src/sorting_utils.ts
@@ -37,7 +37,7 @@ export const sortingUtils = {
      */
     sortFeeOrdersByFeeAdjustedRate(signedFeeOrders: SignedOrder[]): SignedOrder[] {
         assert.doesConformToSchema('signedFeeOrders', signedFeeOrders, schemas.signedOrdersSchema);
-        const rateCalculator = rateUtils.getFeeAdjustedRateOfFeeOrder;
+        const rateCalculator = rateUtils.getFeeAdjustedRateOfFeeOrder.bind(rateUtils);
         const sortedOrders = sortOrders(signedFeeOrders, rateCalculator);
         return sortedOrders;
     },
diff --git a/packages/order-utils/test/rate_utils_test.ts b/packages/order-utils/test/rate_utils_test.ts
index b23a6467a..2e299c209 100644
--- a/packages/order-utils/test/rate_utils_test.ts
+++ b/packages/order-utils/test/rate_utils_test.ts
@@ -2,7 +2,7 @@ import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import 'mocha';
 
-import { constants, rateUtils } from '../src';
+import { rateUtils } from '../src';
 
 import { chaiSetup } from './utils/chai_setup';
 import { testOrderFactory } from './utils/test_order_factory';
diff --git a/packages/order-utils/test/sorting_utils_test.ts b/packages/order-utils/test/sorting_utils_test.ts
index 5a33cb2ca..016432505 100644
--- a/packages/order-utils/test/sorting_utils_test.ts
+++ b/packages/order-utils/test/sorting_utils_test.ts
@@ -1,9 +1,8 @@
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
-import * as _ from 'lodash';
 import 'mocha';
 
-import { constants, rateUtils, sortingUtils } from '../src';
+import { sortingUtils } from '../src';
 
 import { chaiSetup } from './utils/chai_setup';
 import { testOrderFactory } from './utils/test_order_factory';
@@ -32,15 +31,12 @@ describe('sortingUtils', () => {
         });
         it('correctly sorts by fee adjusted rate when feeRate is Provided', async () => {
             const orders = [testOrder1, testOrder2, testOrder3];
-            const sortedOrders = sortingUtils.sortOrdersByFeeAdjustedRate(
-                [testOrder1, testOrder2, testOrder3],
-                feeRate,
-            );
+            const sortedOrders = sortingUtils.sortOrdersByFeeAdjustedRate(orders, feeRate);
             expect(sortedOrders).to.deep.equal([testOrder2, testOrder1, testOrder3]);
         });
         it('correctly sorts by fee adjusted rate when no feeRate is Provided', async () => {
             const orders = [testOrder1, testOrder2, testOrder3];
-            const sortedOrders = sortingUtils.sortOrdersByFeeAdjustedRate([testOrder1, testOrder2, testOrder3]);
+            const sortedOrders = sortingUtils.sortOrdersByFeeAdjustedRate(orders);
             expect(sortedOrders).to.deep.equal([testOrder2, testOrder1, testOrder3]);
         });
     });
@@ -64,7 +60,7 @@ describe('sortingUtils', () => {
         });
         it('correctly sorts by fee adjusted rate', async () => {
             const orders = [testOrder1, testOrder2, testOrder3];
-            const sortedOrders = sortingUtils.sortFeeOrdersByFeeAdjustedRate([testOrder1, testOrder2, testOrder3]);
+            const sortedOrders = sortingUtils.sortFeeOrdersByFeeAdjustedRate(orders);
             expect(sortedOrders).to.deep.equal([testOrder2, testOrder3, testOrder1]);
         });
     });