diff --git a/enrol/self/lib.php b/enrol/self/lib.php
index e23940958ee..01c83f394b6 100644
--- a/enrol/self/lib.php
+++ b/enrol/self/lib.php
@@ -262,12 +262,12 @@ class enrol_self_plugin extends enrol_plugin {
      * @return bool|string true if successful, else error message or false.
      */
     public function can_self_enrol(stdClass $instance, $checkuserenrolment = true) {
-        global $DB, $USER, $CFG;
+        global $CFG, $DB, $OUTPUT, $USER;
 
         if ($checkuserenrolment) {
             if (isguestuser()) {
                 // Can not enrol guest.
-                return get_string('noguestaccess', 'enrol');
+                return get_string('noguestaccess', 'enrol') . $OUTPUT->continue_button(get_login_url());
             }
             // Check if user is already enroled.
             if ($DB->get_record('user_enrolments', array('userid' => $USER->id, 'enrolid' => $instance->id))) {