diff --git a/question/type/match/edit_match_form.php b/question/type/match/edit_match_form.php
index f29b3495644..9e72f5dd54b 100644
--- a/question/type/match/edit_match_form.php
+++ b/question/type/match/edit_match_form.php
@@ -18,7 +18,7 @@ class question_edit_match_form extends question_edit_form {
      * @param object $mform the form being built.
      */
     function definition_inner(&$mform) {
-        $mform->addElement('advcheckbox', 'shuffleanswers', get_string('shuffle', 'quiz'), null, array(0,1));
+        $mform->addElement('advcheckbox', 'shuffleanswers', get_string('shuffle', 'quiz'), null, null, array(0,1));
         $mform->setHelpButton('shuffleanswers', array('matchshuffle', get_string('shuffle','quiz'), 'quiz'));
         $mform->setDefault('shuffleanswers', 1);