diff --git a/shells/chrome/src/detector.js b/shells/chrome/src/detector.js
index 0319243ab..181f3229d 100644
--- a/shells/chrome/src/detector.js
+++ b/shells/chrome/src/detector.js
@@ -9,7 +9,7 @@ function detect (win) {
     const all = document.querySelectorAll('*')
     const el = [].find.call(all, e => e.__vue__)
     if (el) {
-      let Vue = el.__vue__.constructor
+      let Vue = Object.getPrototypeOf(el.__vue__).constructor
       while (Vue.super) {
         Vue = Vue.super
       }