1 files changed, 3 insertions, 3 deletions
diff --git a/packages/0x.js/test/utils/order_factory.ts b/packages/0x.js/test/utils/order_factory.ts
index 6086e09f7..e3161e262 100644
--- a/packages/0x.js/test/utils/order_factory.ts
+++ b/packages/0x.js/test/utils/order_factory.ts
@@ -15,11 +15,11 @@ export const orderFactory = {
         takerTokenAddress: string,
         exchangeContractAddress: string,
         feeRecipient: string,
-        expirationUnixTimestampSec?: BigNumber): Promise<SignedOrder> {
+        expirationUnixTimestampSecIfExists?: BigNumber): Promise<SignedOrder> {
         const defaultExpirationUnixTimestampSec = new BigNumber(2524604400); // Close to infinite
-        expirationUnixTimestampSec = _.isUndefined(expirationUnixTimestampSec) ?
+        const expirationUnixTimestampSec = _.isUndefined(expirationUnixTimestampSecIfExists) ?
             defaultExpirationUnixTimestampSec :
-            expirationUnixTimestampSec;
+            expirationUnixTimestampSecIfExists;
         const order = {
             maker,
             taker,