diff --git a/lisp/gnus/nntp.el b/lisp/gnus/nntp.el
index 038a6d0625f..bdf6f629866 100644
--- a/lisp/gnus/nntp.el
+++ b/lisp/gnus/nntp.el
@@ -233,7 +233,7 @@ server there that you can connect to.  See also
 					  (const :format "" "password")
 					  (string :format "Password: %v")))))))
 
-(make-obsolete 'nntp-authinfo-file nil "24.1")
+(make-obsolete-variable 'nntp-authinfo-file 'netrc-file "24.1")