diff --git a/grade/grading/form/guide/edit_form.php b/grade/grading/form/guide/edit_form.php
index ff2e86da8fa..937f7344b5e 100644
--- a/grade/grading/form/guide/edit_form.php
+++ b/grade/grading/form/guide/edit_form.php
@@ -48,6 +48,7 @@ class gradingform_guide_editguide extends moodleform {
         $form->setType('areaid', PARAM_INT);
 
         $form->addElement('hidden', 'returnurl');
+        $form->setType('returnurl', PARAM_LOCALURL);
 
         // Name.
         $form->addElement('text', 'name', get_string('name', 'gradingform_guide'), array('size'=>52));
diff --git a/grade/grading/form/rubric/edit_form.php b/grade/grading/form/rubric/edit_form.php
index cc51ef0facf..94e329a7406 100644
--- a/grade/grading/form/rubric/edit_form.php
+++ b/grade/grading/form/rubric/edit_form.php
@@ -47,6 +47,7 @@ class gradingform_rubric_editrubric extends moodleform {
         $form->setType('areaid', PARAM_INT);
 
         $form->addElement('hidden', 'returnurl');
+        $form->setType('returnurl', PARAM_LOCALURL);
 
         // name
         $form->addElement('text', 'name', get_string('name', 'gradingform_rubric'), array('size'=>52));