2 files changed, 3 insertions, 3 deletions
diff --git a/contracts/test-utils/src/order_factory.ts b/contracts/test-utils/src/order_factory.ts
index 2449d1a8a..b0f435ff2 100644
--- a/contracts/test-utils/src/order_factory.ts
+++ b/contracts/test-utils/src/order_factory.ts
@@ -21,7 +21,7 @@ export class OrderFactory {
         const currentBlockTimestamp = await getLatestBlockTimestampAsync();
         const order = ({
             senderAddress: constants.NULL_ADDRESS,
-            expirationTimeSeconds: new BigNumber(currentBlockTimestamp).add(tenMinutesInSeconds),
+            expirationTimeSeconds: new BigNumber(currentBlockTimestamp).plus(tenMinutesInSeconds),
             salt: generatePseudoRandomSalt(),
             takerAddress: constants.NULL_ADDRESS,
             ...this._defaultOrderParams,
diff --git a/contracts/test-utils/src/order_utils.ts b/contracts/test-utils/src/order_utils.ts
index 4f7a34011..fd336bb47 100644
--- a/contracts/test-utils/src/order_utils.ts
+++ b/contracts/test-utils/src/order_utils.ts
@@ -7,9 +7,9 @@ import { CancelOrder, MatchOrder } from './types';
 export const orderUtils = {
     getPartialAmountFloor(numerator: BigNumber, denominator: BigNumber, target: BigNumber): BigNumber {
         const partialAmount = numerator
-            .mul(target)
+            .multipliedBy(target)
             .div(denominator)
-            .floor();
+            .integerValue(BigNumber.ROUND_FLOOR);
         return partialAmount;
     },
     createFill: (signedOrder: SignedOrder, takerAssetFillAmount?: BigNumber) => {