diff --git a/sysdeps/mach/hurd/setuid.c b/sysdeps/mach/hurd/setuid.c
index 7084038b0b..4e6fcc2c0a 100644
--- a/sysdeps/mach/hurd/setuid.c
+++ b/sysdeps/mach/hurd/setuid.c
@@ -54,7 +54,7 @@ DEFUN(__setuid, (uid), uid_t uid)
 	      (_hurd_id.aux.nuids - 1) * sizeof (uid_t));
 
       err = __USEPORT (AUTH, __auth_makeauth
-		       (port, NULL, 0, MACH_MSG_TYPE_COPY_SEND,
+		       (port, NULL, MACH_MSG_TYPE_COPY_SEND, 0,
 			_hurd_id.gen.uids, _hurd_id.gen.nuids,
 			_hurd_id.aux.uids, _hurd_id.aux.nuids,
 			newgen, 1 + _hurd_id.gen.nuids,