diff --git a/course/moodleform_mod.php b/course/moodleform_mod.php
index c8378967f61..dd5652a9e2e 100644
--- a/course/moodleform_mod.php
+++ b/course/moodleform_mod.php
@@ -806,7 +806,8 @@ abstract class moodleform_mod extends moodleform {
         $mform = $this->_form;
         $label = is_null($customlabel) ? get_string('moduleintro') : $customlabel;
 
-        $mform->addElement('editor', 'introeditor', $label, null, array('maxfiles'=>EDITOR_UNLIMITED_FILES, 'noclean'=>true, 'context'=>$this->context));
+        $mform->addElement('editor', 'introeditor', $label, array('rows' => 3), array('maxfiles' => EDITOR_UNLIMITED_FILES,
+            'noclean' => true, 'context' => $this->context, 'collapsed' => true));
         $mform->setType('introeditor', PARAM_RAW); // no XSS prevention here, users must be trusted
         if ($required) {
             $mform->addRule('introeditor', get_string('required'), 'required', null, 'client');