diff --git a/classes/studyplan.php b/classes/studyplan.php
index 28e90c8..ac98a25 100644
--- a/classes/studyplan.php
+++ b/classes/studyplan.php
@@ -316,7 +316,7 @@ class studyplan {
      */
     public function edit($fields) : self {
         global $DB;
-        $editable = ['name', 'shortname', 'description', 'idnumber', 'context_id', 'aggregation', 'aggregation_config'];
+        $editable = ['name', 'shortname', 'description', 'descriptionformat', 'idnumber', 'context_id', 'aggregation', 'aggregation_config'];
         $info = ['id' => $this->id, ];
         foreach ($editable as $f) {
             if (array_key_exists($f, $fields)) {