diff --git a/src/testdir/test_method.vim b/src/testdir/test_method.vim
index 2ca66fd..120fade 100644
--- a/src/testdir/test_method.vim
+++ b/src/testdir/test_method.vim
@@ -62,7 +62,7 @@
   call assert_equal(2, d->remove("two"))
   let d.two = 2
   call assert_fails('let x = d->repeat(2)', 'E731:')
-  call assert_fails('let x = d->reverse()', 'E899:')
+  call assert_fails('let x = d->reverse()', 'E1252:')
   call assert_fails('let x = d->sort()', 'E686:')
   call assert_equal("{'one': 1, 'two': 2, 'three': 3}", d->string())
   call assert_equal(v:t_dict, d->type())