diff --git a/src/utils/card2.js b/src/utils/card2.js
index 9fab365..a7efe03 100644
--- a/src/utils/card2.js
+++ b/src/utils/card2.js
@@ -1,5 +1,7 @@
 import _ from "lodash";
 
+const DEFAULT_LINK = 'https://utel.vip';
+
 function vcardUuid(vcard, secret) {
   const hash = CryptoJS.HmacMD5(JSON.stringify(vcard), secret);
   const hex = CryptoJS.enc.Hex.stringify(hash);