diff --git a/src/platforms/web/util/compat.js b/src/platforms/web/util/compat.js
index 3ee0019e622..144d68afb6d 100644
--- a/src/platforms/web/util/compat.js
+++ b/src/platforms/web/util/compat.js
@@ -5,7 +5,7 @@ import { inBrowser } from 'core/util/index'
 // check whether current browser encodes a char inside attribute values
 function shouldDecode (content: string, encoded: string): boolean {
   const div = document.createElement('div')
-  div.innerHTML = `<div a="${content}">`
+  div.innerHTML = `<div a="${content}"/>`
   return div.innerHTML.indexOf(encoded) > 0
 }