diff --git a/include/msxml.idl b/include/msxml.idl
index 72fe604fbd0..328d8aa2d6f 100644
--- a/include/msxml.idl
+++ b/include/msxml.idl
@@ -315,6 +315,17 @@ interface IXMLError : IUnknown
     HRESULT GetErrorInfo([out]XML_ERROR *pErrorReturn);
 };
 
+[
+    object,
+    local,
+    uuid(D9F1E15A-CCDB-11d0-9C0C-00C04FC99C8E)
+]
+interface IXMLElementNotificationSink : IDispatch
+{
+    [id(DISPID_XMLNOTIFSINK_CHILDADDED)] 
+    HRESULT ChildAdded([in]IDispatch *pChildElem); 
+};
+
 [
 uuid(cfc399af-d876-11d0-9c10-00c04fc99c8e)
 ]