diff --git a/vesuvius/mod/xst/main.inc b/vesuvius/mod/xst/main.inc
index 6ce0ebcf..140a50fb 100755
--- a/vesuvius/mod/xst/main.inc
+++ b/vesuvius/mod/xst/main.inc
@@ -10,6 +10,7 @@
  * @lastModified 2011.0810
  */
 
+header("content-type: application/javascript");
 
 function shn_text_xst_help() {
 	if(empty($_GET['help_id'])) {