diff --git a/ares/Makefile.netware b/ares/Makefile.netware
index ee91b75e0..3ae5d6c14 100644
--- a/ares/Makefile.netware
+++ b/ares/Makefile.netware
@@ -306,6 +306,7 @@ else
 	@echo $(DL)#define HAVE_SYS_SOCKET_H 1$(DL) >> $@
 	@echo $(DL)#define HAVE_SYS_SOCKIO_H 1$(DL) >> $@
 	@echo $(DL)#define HAVE_NETDB_H 1$(DL) >> $@
+	@echo $(DL)#define HAVE_AF_INET6_H 1$(DL) >> $@
 endif
 ifdef OLD_NOVELLSDK
 	@echo $(DL)#define socklen_t int$(DL) >> $@