diff --git a/config.h.in b/config.h.in
index 56799e92d8..de91891b98 100644
--- a/config.h.in
+++ b/config.h.in
@@ -24,12 +24,6 @@
 /* define if you need inet_pton() */
 #undef NEED_INET_PTON
 
-/* define if you need AF_INET6 */
-#undef NEED_AF_INET6
-
-/* define if your struct sockaddr has a sa_len member */
-#undef HAVE_SA_LEN
-
 /* define if your system needs pthread_init() before using pthreads */
 #undef NEED_PTHREAD_INIT