diff --git a/webtoken.js b/webtoken.js
index be7e0d7..b1d6f44 100644
--- a/webtoken.js
+++ b/webtoken.js
@@ -26,7 +26,7 @@ module.exports = {
       return null
     }
   },
-  verifyToken (token, key = my.envar.tokenKey || wo?.envar?.tokenKey) {
+  verifyToken (token, key = my.envar?.tokenKey || wo?.envar?.tokenKey) {
     if (!key) {
       console.warn('*** tokenkey is empty! ***')
     }