diff --git a/include/config.h.w32 b/include/config.h.w32
index b89859415..8fa5b45ad 100644
--- a/include/config.h.w32
+++ b/include/config.h.w32
@@ -1224,6 +1224,9 @@ static const char *const rcsid[] = { (const char *)rcsid, "@(#)" msg }
 /* Defined if we have WinSock */
 #define HAVE_WINSOCK 1
 
+/* Defined if we have WinDNS */
+#define HAVE_WINDNS 1
+
 /* define if struct winsize has ws_xpixel */
 /* #define HAVE_WS_XPIXEL 1 */
 
@@ -1404,6 +1407,9 @@ static const char *const rcsid[] = { (const char *)rcsid, "@(#)" msg }
 /* Define if a socket is not a file descriptor */
 #define SOCKET_IS_NOT_AN_FD 1
 
+/* Define if FD_SETSIZE check does not apply to this platform */
+#define NO_LIMIT_FD_SETSIZE 1
+
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1