diff --git a/lib/db/upgrade.php b/lib/db/upgrade.php
index d7eed37dc94..841f4fbdc6d 100644
--- a/lib/db/upgrade.php
+++ b/lib/db/upgrade.php
@@ -726,7 +726,7 @@ function xmldb_main_upgrade($oldversion=0) {
                 if ($data = get_records('user_info_data', 'fieldid', $field->id)) {
 
                 /// Get the menu options
-                    $options = explode("\n", $this->field->param1);
+                    $options = explode("\n", $field->param1);
                     foreach ($data as $d) {
                         $key = array_search($d->data, $options);