diff --git a/Build.sh b/Build.sh
index 5caeb6b..b6f7af4 100644
--- a/Build.sh
+++ b/Build.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.464 2010/12/12 14:06:35 tg Exp $'
+srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.465 2011/01/15 21:56:36 tg Exp $'
 #-
 # Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
 #	Thorsten Glaser <tg@mirbsd.org>
@@ -454,6 +454,10 @@ Minix)
 	;;
 MirBSD)
 	;;
+MSYS_*)
+	# probably same as CYGWIN* – need to test; from RT|Chatzilla
+	oswarn='but will probably work'
+	;;
 NetBSD)
 	;;
 OpenBSD)