diff --git a/src/testdir/test_autochdir.vim b/src/testdir/test_autochdir.vim
index 332de8f..eb40253 100644
--- a/src/testdir/test_autochdir.vim
+++ b/src/testdir/test_autochdir.vim
@@ -28,9 +28,9 @@
 func Test_set_filename_other_window()
   let cwd = getcwd()
   call test_autochdir()
-  call mkdir('Xa')
-  call mkdir('Xb')
-  call mkdir('Xc')
+  call mkdir('Xa', 'R')
+  call mkdir('Xb', 'R')
+  call mkdir('Xc', 'R')
   try
     args Xa/aaa.txt Xb/bbb.txt
     set acd
@@ -45,9 +45,6 @@
     bwipe! aaa.txt
     bwipe! bbb.txt
     bwipe! ccc.txt
-    call delete('Xa', 'rf')
-    call delete('Xb', 'rf')
-    call delete('Xc', 'rf')
   endtry
 endfunc
 
@@ -56,7 +53,7 @@
   set acd
   call test_autochdir()
 
-  call mkdir('XacdDir')
+  call mkdir('XacdDir', 'R')
   let winid = win_getid()
   new XacdDir/file
   call assert_match('testdir.XacdDir$', getcwd())
@@ -68,7 +65,6 @@
   bwipe!
   set noacd
   call chdir(cwd)
-  call delete('XacdDir', 'rf')
 endfunc
 
 func Test_verbose_pwd()
@@ -78,7 +74,7 @@
   edit global.txt
   call assert_match('\[global\].*testdir$', execute('verbose pwd'))
 
-  call mkdir('Xautodir')
+  call mkdir('Xautodir', 'R')
   split Xautodir/local.txt
   lcd Xautodir
   call assert_match('\[window\].*testdir[/\\]Xautodir', execute('verbose pwd'))
@@ -112,7 +108,6 @@
 
   bwipe!
   call chdir(cwd)
-  call delete('Xautodir', 'rf')
 endfunc
 
 func Test_multibyte()