diff --git a/src/main/twirl/gitbucket/core/helper/preview.scala.html b/src/main/twirl/gitbucket/core/helper/preview.scala.html
index aa18dea..1276c68 100644
--- a/src/main/twirl/gitbucket/core/helper/preview.scala.html
+++ b/src/main/twirl/gitbucket/core/helper/preview.scala.html
@@ -40,8 +40,6 @@
     </div>
   </div>
 </div>
-<link  href="@helpers.assets("/vendors/google-code-prettify/prettify.css")" type="text/css" rel="stylesheet"/>
-<script src="@helpers.assets("/vendors/google-code-prettify/prettify.js")"></script>
 <script>
 $(function(){
   @if(elastic){