diff --git a/django/contrib/admin/media/js/urlify.js b/django/contrib/admin/media/js/urlify.js
index 90d11c435a..9b87113628 100644
--- a/django/contrib/admin/media/js/urlify.js
+++ b/django/contrib/admin/media/js/urlify.js
@@ -7,7 +7,7 @@ function URLify(s, num_chars) {
                   "with"];
     r = new RegExp('\\b(' + removelist.join('|') + ')\\b', 'gi');
     s = s.replace(r, '');
-    s = s.replace(/[^-A-Z0-9\s]/gi, '');  // remove unneeded chars
+    s = s.replace(/[^-\w\s]/g, '');  // remove unneeded chars
     s = s.replace(/^\s+|\s+$/g, ''); // trim leading/trailing spaces
     s = s.replace(/[-\s]+/g, '-');   // convert spaces to hyphens
     s = s.toLowerCase();             // convert to lowercase