1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/fast-lock.el b/lisp/fast-lock.el
index 0268a1ecad3..d739673288f 100644
--- a/lisp/fast-lock.el
+++ b/lisp/fast-lock.el
@@ -535,7 +535,7 @@ See `fast-lock-cache-directory'."
       (concat buffer-file-name ".flc")
     (let* ((bufile (expand-file-name buffer-file-truename))
            (chars-alist
-            (if (eq system-type 'emx)
+            (if (memq system-type '(emx windowsnt))
                 '((?/ . (?#)) (?# . (?# ?#)) (?: . (?\;)) (?\; . (?\; ?\;)))
               '((?/ . (?#)) (?# . (?# ?#)))))
            (mapchars