diff --git a/content/base/public/nsIDOMParser.idl b/content/base/public/nsIDOMParser.idl
index 4b4deb78dd1..370eaa27b19 100644
--- a/content/base/public/nsIDOMParser.idl
+++ b/content/base/public/nsIDOMParser.idl
@@ -19,7 +19,7 @@ interface nsIGlobalObject;
  * parsing with the XMLHttpRequest interface, which can be used for
  * asynchronous (callback-based) loading.
  */
-[uuid(5677f36e-1842-4c6f-a39c-2e5576ab8b40)]
+[uuid(70b9600e-8622-4c93-9ad8-22c28058dc44)]
 interface nsIDOMParser : nsISupports
 {
   /**