diff --git a/src/core/js/caosdb.js b/src/core/js/caosdb.js
index 5be29d5f50cf3d1c9a6894b6824a6170fed2a060..7c3c4300f971eae16d30748e6787843334708baa 100644
--- a/src/core/js/caosdb.js
+++ b/src/core/js/caosdb.js
@@ -1071,20 +1071,16 @@ function createFileXML(name, id, parents,
  * Update, Response, Delete.
  *
  * @param {string} root - The name of the newly created document root node.
- * @param {(Document|XMLDocumentFragment)} xmls The xml documents.
+ * @param {Document[]|XMLDocumentFragment[]} xmls The xml documents.
  * @return {Document} A new xml document.
  */
-function wrapXML(root, xmls, start_with_root=undefined) {
+function wrapXML(root, xmls) {
     xmls = caosdb_utils.assert_array(xmls, "param `xmls`", true);
     caosdb_utils.assert_string(root, "param `root`");
 
     var doc = _createDocument(root);
     for (var i = 0; i < xmls.length; i++) {
-        if (start_with_root === undefined || start_with_root  != true){
-            doc.firstElementChild.appendChild(xmls[i].firstElementChild);
-        }else {
-            doc.firstElementChild.appendChild(xmls[i]);
-        }
+        doc.firstElementChild.appendChild(xmls[i].firstElementChild);
     }
 
     return doc;
@@ -1188,9 +1184,11 @@ async function restore_old_version(versionid){
     for (let i = permissions.length-1; i >=0 ; i--) {
         permissions[i].remove();
     }
+
     // use XML to update entity/restore old version
-    reps = await transaction.updateEntitiesXml(
-        wrapXML("Request", [ent], start_with_root=true))
+    const doc = _createDocument("Request");
+    doc.firstElementChild.appendChild(ent);
+    reps = await transaction.updateEntitiesXml(doc);
     if (reps.getElementsByTagName("Error").length>0) {
         throw new Error(`Could not restore the Entity to the version ${versionid}.`);
     }