diff --git a/ares/config-win32.h b/ares/config-win32.h
index dde9978f9b3249ae06c6e648750a260ae0e24510..6fd8288adaaae37dd9d332e739ef1d55594374dd 100644
--- a/ares/config-win32.h
+++ b/ares/config-win32.h
@@ -168,6 +168,15 @@
   #define SOCKET              int
   #define NS_INADDRSZ         4
   #define HAVE_ARPA_NAMESER_H 1
+  #define HAVE_ARPA_INET_H    1
+  #define HAVE_NETDB_H        1
+  #define HAVE_NETINET_IN_H   1
+  #define HAVE_SYS_SOCKET_H   1
+  #define HAVE_NETINET_TCP_H  1
+  #define HAVE_AF_INET6       1
+  #define HAVE_PF_INET6       1
+  #define HAVE_STRUCT_IN6_ADDR     1
+  #define HAVE_STRUCT_SOCKADDR_IN6 1
   #undef HAVE_WINSOCK_H
   #undef HAVE_WINSOCK2_H
   #undef HAVE_WS2TCPIP_H