1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/facemenu.el b/lisp/facemenu.el
index 4e0d293ca30..bf6cad47f24 100644
--- a/lisp/facemenu.el
+++ b/lisp/facemenu.el
@@ -491,7 +491,7 @@ This function queries the window-system server to find out what the
 color names mean.  It returns nil if the colors differ or if it can't
 determine the correct answer."
   (cond ((equal a b) t)
-        ((and (or (eq window-system 'x) (eq window-system 'win32))
+        ((and (memq window-system '(x ms-windows))
               (equal (x-color-values a) (x-color-values b))))
         ((eq window-system 'pc)
          (and (x-color-defined-p a) (x-color-defined-p b)