diff --git a/bibtexbrowser.php b/bibtexbrowser.php
index 2046eef..36cade4 100755
--- a/bibtexbrowser.php
+++ b/bibtexbrowser.php
@@ -77,6 +77,9 @@ if (defined('ENCODING')) {
@define('BIBTEXBROWSER_RENDER_MATH', true);
@define('MATHJAX_URI', '//cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS_HTML.js');
+// the default jquery URI
+@define('JQUERY_URI', '//code.jquery.com/jquery-1.5.1.min.js');
+
// can we load bibtex files on external servers?
@define('BIBTEXBROWSER_LOCAL_BIB_ONLY', true);
@@ -2483,7 +2486,7 @@ if (!function_exists('poweredby')) {
function javascript() {
// we use jquery with the official content delivery URLs
// Microsoft and Google also provide jquery with their content delivery networks
-?>
+?>