diff --git a/enrol/locallib.php b/enrol/locallib.php
index 17466978879..3adf9b4b25d 100644
--- a/enrol/locallib.php
+++ b/enrol/locallib.php
@@ -1260,15 +1260,18 @@ class enrol_user_button extends single_button {
      * @param string|array $modules One or more modules to require
      * @param string $function The JS function to call
      * @param array $arguments An array of arguments to pass to the function
-     * @param string $galleryversion The YUI gallery version of any modules required
+     * @param string $galleryversion Deprecated: The gallery version to use
      * @param bool $ondomready If true the call is postponed until the DOM is finished loading
      */
-    public function require_yui_module($modules, $function, array $arguments = null, $galleryversion = '2010.04.08-12-35', $ondomready = false) {
+    public function require_yui_module($modules, $function, array $arguments = null, $galleryversion = null, $ondomready = false) {
+        if ($galleryversion != null) {
+            debugging('The galleryversion parameter to yui_module has been deprecated since Moodle 2.3.');
+        }
+
         $js = new stdClass;
         $js->modules = (array)$modules;
         $js->function = $function;
         $js->arguments = $arguments;
-        $js->galleryversion = $galleryversion;
         $js->ondomready = $ondomready;
         $this->jsyuimodules[] = $js;
     }
@@ -1312,7 +1315,7 @@ class enrol_user_button extends single_button {
      */
     public function initialise_js(moodle_page $page) {
         foreach ($this->jsyuimodules as $js) {
-            $page->requires->yui_module($js->modules, $js->function, $js->arguments, $js->galleryversion, $js->ondomready);
+            $page->requires->yui_module($js->modules, $js->function, $js->arguments, null, $js->ondomready);
         }
         foreach ($this->jsinitcalls as $js) {
             $page->requires->js_init_call($js->function, $js->extraarguments, $js->ondomready, $js->module);