diff --git a/lib/isc/win32/socket.c b/lib/isc/win32/socket.c
index 1263bb6ba4..953a81119e 100644
--- a/lib/isc/win32/socket.c
+++ b/lib/isc/win32/socket.c
@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: socket.c,v 1.91 2011/08/23 17:02:53 each Exp $ */
+/* $Id: socket.c,v 1.92 2011/08/23 18:24:33 each Exp $ */
 
 /* This code uses functions which are only available on Server 2003 and
  * higher, and Windows XP and higher.
@@ -3826,6 +3826,11 @@ isc__socket_gettag(isc_socket_t *socket) {
 	return (socket->tag);
 }
 
+int
+isc__socket_getfd(isc_socket_t *socket) {
+	return ((short) socket->fd);
+}
+
 void
 isc__socketmgr_setreserved(isc_socketmgr_t *manager, isc_uint32_t reserved) {
 	UNUSED(manager);