diff --git a/components/ILIAS/User/classes/class.ilObjUserFolderGUI.php b/components/ILIAS/User/classes/class.ilObjUserFolderGUI.php
index dd971adee18f..12b1254687da 100755
--- a/components/ILIAS/User/classes/class.ilObjUserFolderGUI.php
+++ b/components/ILIAS/User/classes/class.ilObjUserFolderGUI.php
@@ -2434,23 +2434,23 @@ public function saveGlobalUserSettingsObject(string $action = ''): void
 
         $this->ilias->setSetting(
             'mail_incoming_mail',
-            $selected['default_mail_incoming_mail']
+            $selected['default_mail_incoming_mail'] ?? '0'
         );
         $this->ilias->setSetting(
             'chat_osc_accept_msg',
-            $selected['default_chat_osc_accept_msg']
+            $selected['default_chat_osc_accept_msg'] ?? 'n'
         );
         $this->ilias->setSetting(
             'chat_broadcast_typing',
-            $selected['default_chat_broadcast_typing']
+            $selected['default_chat_broadcast_typing'] ?? 'n'
         );
         $this->ilias->setSetting(
             'bs_allow_to_contact_me',
-            $selected['default_bs_allow_to_contact_me']
+            $selected['default_bs_allow_to_contact_me'] ?? 'n'
         );
         $this->ilias->setSetting(
             'hide_own_online_status',
-            $selected['default_hide_own_online_status']
+            $selected['default_hide_own_online_status'] ?? 'n'
         );
 
         if ($this->usrFieldChangeListenersAccepted && count($changed_fields) > 0) {