diff --git a/src/testdir/test_cmdline.vim b/src/testdir/test_cmdline.vim
index c2bbcc6..7f62dfe 100644
--- a/src/testdir/test_cmdline.vim
+++ b/src/testdir/test_cmdline.vim
@@ -1237,6 +1237,7 @@
 
   augroup CmdWin
     au!
+    autocmd BufLeave * if &buftype == '' | update | endif
     autocmd CmdwinEnter * startinsert
   augroup END