diff --git a/lib/vtt.js b/lib/vtt.js
index 6e7aa3a..67c25eb 100644
--- a/lib/vtt.js
+++ b/lib/vtt.js
@@ -356,7 +356,6 @@ function parseContent(window, input) {
       return null;
     }
     var element = window.document.createElement(tagName);
-    element.localName = tagName;
     var name = TAG_ANNOTATION[type];
     if (name && annotation) {
       element[name] = annotation.trim();