diff --git a/lib/js/test/testws.html b/lib/js/test/testws.html
index 2e9f786..ed2fe36 100644
--- a/lib/js/test/testws.html
+++ b/lib/js/test/testws.html
@@ -51,10 +51,12 @@
   <div id="qunit-testrunner-toolbar"></div>
   <h2 id="qunit-userAgent"></h2>
   <ol id="qunit-tests"><li><!-- get valid xhtml strict--></li></ol>
+  <!-- Uncomment this to check the validity. This significantly slows down the test.
   <p>
       <a href="http://validator.w3.org/check/referer"><img
           src="http://www.w3.org/Icons/valid-xhtml10"
           alt="Valid XHTML 1.0!" height="31" width="88" /></a>
   </p>
+  -->
 </body>
 </html>