diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 4703373c7..2cafc2841 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2000-05-13  Mumit Khan  <khan@xraylith.wisc.edu>
+
+	* include/cygwin/socket.h (AF_INET6): Use same value as winsock2.
+
 2000-05-12  Mumit Khan  <khan@xraylith.wisc.edu>
 
 	* include/cygwin/in.h (struct in6_addr): Fix spelling.
diff --git a/winsup/cygwin/include/cygwin/socket.h b/winsup/cygwin/include/cygwin/socket.h
index f40b2ac04..963652f5e 100644
--- a/winsup/cygwin/include/cygwin/socket.h
+++ b/winsup/cygwin/include/cygwin/socket.h
@@ -66,7 +66,7 @@ struct msghdr
 #define AF_HYLINK       15              /* NSC Hyperchannel */
 #define AF_APPLETALK    16              /* AppleTalk */
 #define AF_NETBIOS      17              /* NetBios-style addresses */
-#define AF_INET6        18              /* IP version 6 */
+#define AF_INET6        23              /* IP version 6 */
 
 #define AF_MAX          32
 /*