Update runtime files
diff --git a/runtime/indent/make.vim b/runtime/indent/make.vim
index 76c8f83..4d1838b 100644
--- a/runtime/indent/make.vim
+++ b/runtime/indent/make.vim
@@ -2,7 +2,7 @@
" Language: Makefile
" Maintainer: Doug Kearns <dougkearns@gmail.com>
" Previous Maintainer: Nikolai Weibull <now@bitwi.se>
-" Last Change: 24 Sep 2021
+" Last Change: 2022 Apr 06
if exists("b:did_indent")
finish
@@ -13,7 +13,7 @@
setlocal indentkeys=!^F,o,O,<:>,=else,=endif
setlocal nosmartindent
-let b:undo_indent = "setl ai< inde< indk<"
+let b:undo_indent = "setl inde< indk< si<"
if exists("*GetMakeIndent")
finish