diff --git a/rdf/content/public/idl/XULEditorElement.idl b/rdf/content/public/idl/XULEditorElement.idl
new file mode 100644
index 000000000000..42310373e68b
--- /dev/null
+++ b/rdf/content/public/idl/XULEditorElement.idl
@@ -0,0 +1,5 @@
+interface XULEditorElement : XULElement {
+/* IID: { 0x9a248050, 0x82d8, 0x11d3, \
+	 { 0xaf, 0x76, 0x0, 0xa0, 0x24, 0xff, 0xc0, 0x8c } } */
+  readonly attribute xpidl nsIEditorShell editorShell;
+};
diff --git a/rdf/content/public/idl/makefile.win b/rdf/content/public/idl/makefile.win
index 456235f424b1..e0c47e714654 100644
--- a/rdf/content/public/idl/makefile.win
+++ b/rdf/content/public/idl/makefile.win
@@ -25,7 +25,8 @@ IDLSRCS =  \
         XULElement.idl          \
         XULCommandDispatcher.idl   \
         XULTreeElement.idl      \
-        $(NULL)
+        XULEditorElement.idl      \
+       $(NULL)
 
 XPCOM_DESTDIR=$(DEPTH)\rdf\content\public
 JSSTUB_DESTDIR=$(DEPTH)\rdf\content\src