diff --git a/lib/preview.php b/lib/preview.php
index 4705efe210787f15592887f8648181a4699e03bc..f9f1288cb98e8cef5cc4819386c58ae4b7eef5f8 100755
--- a/lib/preview.php
+++ b/lib/preview.php
@@ -20,8 +20,7 @@ require_once('preview/pdf.php');
 require_once('preview/svg.php');
 require_once('preview/txt.php');
 require_once('preview/unknown.php');
-//require_once('preview/msoffice.php');
-//require_once('preview/opendocument.php');
+require_once('preview/office.php');
 
 class Preview {
 	//the thumbnail  folder