diff --git a/user/filters/courserole.php b/user/filters/courserole.php
index 09d3d7f0f8a..22dad4e5fcc 100644
--- a/user/filters/courserole.php
+++ b/user/filters/courserole.php
@@ -46,7 +46,7 @@ class user_filter_courserole extends user_filter_type {
         $objs[] =& $mform->createElement('select', $this->_name .'_ct', null, $this->get_course_categories());
         $objs[] =& $mform->createElement('text', $this->_name, null);
         $grp =& $mform->addElement('group', $this->_name.'_grp', $this->_label, $objs, '', false);
-        $mform->setType($this->_name, PARAM_ALPHANUMEXT);
+        $mform->setType($this->_name, PARAM_TEXT);
         if ($this->_advanced) {
             $mform->setAdvanced($this->_name.'_grp');
         }