diff --git a/core/modules/filter/filter.filter_html.admin.js b/core/modules/filter/filter.filter_html.admin.js
index 8c9cef6..b5244cd 100644
--- a/core/modules/filter/filter.filter_html.admin.js
+++ b/core/modules/filter/filter.filter_html.admin.js
@@ -236,7 +236,7 @@
       var attributes;
       var attribute;
       var allowedTags = setting.match(/(<[^>]+>)/g);
-      var sandbox = document.createElement('div');
+      var sandbox = document.implementation.createHTMLDocument().createElement('div');
       var rules = {};
       for (var t = 0; t < allowedTags.length; t++) {
         // Let the browser do the parsing work for us.