diff --git a/html/dom/documents/dom-tree-accessors/document.body-setter-01.html b/html/dom/documents/dom-tree-accessors/document.body-setter-01.html
index 8c53e762109eae..319000b9418add 100644
--- a/html/dom/documents/dom-tree-accessors/document.body-setter-01.html
+++ b/html/dom/documents/dom-tree-accessors/document.body-setter-01.html
@@ -1,17 +1,27 @@
 <!DOCTYPE html>
 <title>Setting document.body to incorrect values</title>
 <link rel="author" title="Ms2ger" href="mailto:ms2ger@gmail.com">
-<link rel="help" href="http://www.whatwg.org/html5/#dom-document-body">
+<link rel="help" href="http://www.whatwg.org/html/#dom-document-body">
 <link rel="help" href="http://dev.w3.org/2006/webapi/WebIDL/#es-interface">
-<link rel="stylesheet" href="/resources/testharness.css">
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
 <div id="log"></div>
 <script>
 test(function() {
-  assert_throws(new TypeError(), function() { document.body = "text" })
-}, "Should throw a TypeError.");
+  assert_throws(new TypeError(), function() {
+    document.body = "text"
+  })
+}, "Should throw a TypeError when trying to set document.body to a string.")
 test(function() {
-  assert_throws("HIERARCHY_REQUEST_ERR", function() { document.body = document.createElement("div") })
-}, "Should throw a HIERARCHY_REQUEST_ERR.");
+  assert_throws("HierarchyRequestError", function() {
+    document.body = document.createElement("div")
+  })
+}, "Should throw a HierarchyRequestError when trying to set document.body to a div element.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("")
+  doc.removeChild(doc.documentElement)
+  assert_throws("HierarchyRequestError", function() {
+    doc.body = document.createElement("body")
+  })
+}, "Should throw a HierarchyRequestError when trying to set document.body when there's no root element.")
 </script>
