diff --git a/test/src/fns-tests.el b/test/src/fns-tests.el
index c36b5e3f41b..b84d39a063d 100644
--- a/test/src/fns-tests.el
+++ b/test/src/fns-tests.el
@@ -253,7 +253,7 @@
   ;; Ignore case.
   (should (string-collate-equalp "xyzzy" "XYZZY" nil t))
 
-  ;; Locale must be valid.  This test will fail on Cygwin releases < 3.5.
+  ;; Locale must be valid.
   (should-error (string-collate-equalp "xyzzy" "xyzzy" "en_XY.UTF-8")))
 
 ;; There must be a check for valid codepoints.  (Check not implemented yet)