diff --git a/lib/helper/XML.js b/lib/helper/XML.js
index 5f40fe91..69deb75f 100644
--- a/lib/helper/XML.js
+++ b/lib/helper/XML.js
@@ -20,7 +20,7 @@ function seekForNS(node, parentNS) {
     return ns;
 }
 function mutateNodeNS(node, parentNS) {
-    if (parentNS === void 0) { parentNS = { _default: 'DAV:' }; }
+    if (parentNS === void 0) { parentNS = {}; }
     if (!node)
         return;
     var nss = seekForNS(node, parentNS);
diff --git a/src/helper/XML.ts b/src/helper/XML.ts
index 851d6f9b..c1f92639 100644
--- a/src/helper/XML.ts
+++ b/src/helper/XML.ts
@@ -24,7 +24,7 @@ function seekForNS(node : any, parentNS : any) : any
     return ns;
 }
 
-function mutateNodeNS(node : any, parentNS = { _default: 'DAV:' })
+function mutateNodeNS(node : any, parentNS = { })
 {
     if(!node)
         return;