diff --git a/index.js b/index.js
index ab303dc..e71281f 100644
--- a/index.js
+++ b/index.js
@@ -518,7 +518,7 @@ class TICrypto {
    * @return {String} address
    * @memberof TICrypto
    */
-  static secword2address(secword, { coin, pass, path, tool, hasher }) {
+  static secword2address(secword, { coin, pass, path, tool, hasher } = {}) {
     coin = my.COIN_LIST.indexOf(coin?.toUpperCase()) >= 0 ? coin.toUpperCase() : my.COIN
     let kp = this.secword2keypair(secword, { coin, pass, path, tool, hasher })
     if (kp) {