diff --git a/build-aux/config.guess b/build-aux/config.guess
line changes: +2/-2
index 480b123..ad5281e
--- a/build-aux/config.guess
+++ b/build-aux/config.guess

@@ -3,7 +3,7 @@
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
 #   2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
 
-timestamp='2005-07-08'
+timestamp='2005-08-03'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by

@@ -794,7 +794,7 @@ EOF
     i*:UWIN*:*)
 	echo ${UNAME_MACHINE}-pc-uwin
 	exit ;;
-    amd64:CYGWIN*:*:*)
+    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
 	echo x86_64-unknown-cygwin
 	exit ;;
     p*:CYGWIN*:*)