diff --git a/lib/gateway/PortfolioGateway.js b/lib/gateway/PortfolioGateway.js
index 7b87a121..45d1304f 100644
--- a/lib/gateway/PortfolioGateway.js
+++ b/lib/gateway/PortfolioGateway.js
@@ -882,7 +882,7 @@ module.exports = (() => {
 		 *
 		 * @public
 		 * @param {Schema.TransactionCreate} transaction
-		 * @param {Object} options
+		 * @param {Object=} options
 		 * @returns {Promise<Schema.TransactionMutateResult>}
 		 */
 		createTransaction(transaction, options) {