diff --git a/lisp/gnus/nndiary.el b/lisp/gnus/nndiary.el
index 5993d3a44aa..483c2ee1070 100644
--- a/lisp/gnus/nndiary.el
+++ b/lisp/gnus/nndiary.el
@@ -606,7 +606,7 @@ all.  This may very well take some time.")
     (nconc rest articles)))
 
 (deffoo nndiary-request-move-article
-    (article group server accept-form &optional last move-is-internal)
+    (article group server accept-form &optional last)
   (let ((buf (get-buffer-create " *nndiary move*"))
 	result)
     (nndiary-possibly-change-directory group server)