diff --git a/src/testdir/test73.in b/src/testdir/test73.in
index 9438076..cb2604e 100644
--- a/src/testdir/test73.in
+++ b/src/testdir/test73.in
@@ -9,7 +9,7 @@
 :set nocp viminfo+=nviminfo visualbell
 :"
 :function! DeleteDirectory(dir)
-: if has("win16") || has("win32") || has("win64")
+: if has("win16") || has("win32") || has("win64") || has("dos16") || has("dos32")
 :  exec "silent !rmdir /Q /S " . a:dir
 : else
 :  exec "silent !rm -rf " . a:dir