diff --git a/mailnews/base/public/nsIMessenger.idl b/mailnews/base/public/nsIMessenger.idl
index e0784dad8a5..00194e8c652 100644
--- a/mailnews/base/public/nsIMessenger.idl
+++ b/mailnews/base/public/nsIMessenger.idl
@@ -17,6 +17,7 @@
  */
 
 #include "nsISupports.idl"
+#include "nsrootidl.idl"
 #include "domstubs.idl"
 #include "xulstubs.idl"
 #include "nsIRDFCompositeDataSource.idl"
@@ -76,5 +77,7 @@ interface nsIMessenger : nsISupports {
 	void SetDocumentCharset(in wstring characterSet);
     void saveAs(in string url, in boolean asFile);
     void openAttachment(in string url, in string displayName, in string messageUri);
+    void forwardMessages(in nsIDOMNodeList messages,
+						 in PRInt32 type);
 };