diff --git a/mailnews/news/public/nsINntpService.idl b/mailnews/news/public/nsINntpService.idl
index 8646d47eb30..2083ea434d9 100644
--- a/mailnews/news/public/nsINntpService.idl
+++ b/mailnews/news/public/nsINntpService.idl
@@ -25,11 +25,9 @@ interface nsIStreamListener;
 interface nsISupportsArray;
 
 [ref] native nsFilePath(nsFilePath);
-[ref] native nsString(nsString); 
 
 %{ C++
 #include "nsFileSpec.h"
-#include "nsString.h"
 %}
 
 /* sspitzer:  TODO use MailNewsTypes.idl or MailNewsTypes.h */
@@ -42,7 +40,7 @@ interface nsINntpService : nsISupports {
 
   [noscript] nsIURI PostMessage (in nsFilePath pathToFile, in string newsgroupNames, in nsIUrlListener aUrlListener);
 
-  [noscript] nsIURI RunNewsUrl (in nsString urlString, in nsString newsgroupName, in nsMsgKey aKey, in nsISupports aConsumer, in nsIUrlListener aUrlListener); 
+  nsIURI RunNewsUrl (in string urlString, in string newsgroupName, in nsMsgKey aKey, in nsISupports aConsumer, in nsIUrlListener aUrlListener); 
 
   nsIURI GetNewNews (in nsINntpIncomingServer nntpServer, in string uri, in nsIUrlListener aUrlListener);