diff --git a/ares/Makefile.netware b/ares/Makefile.netware
index 9f2a4f63abf80c4695626eee3116d4edbab4b084..eb1c5096ca3e9337539b7aedf98a2af6c0413776 100644
--- a/ares/Makefile.netware
+++ b/ares/Makefile.netware
@@ -387,6 +387,7 @@ endif
 	@echo $(DL)#define HAVE_UNISTD_H 1$(DL) >> $@
 	@echo $(DL)#define HAVE_UTIME 1$(DL) >> $@
 	@echo $(DL)#define HAVE_UTIME_H 1$(DL) >> $@
+	@echo $(DL)#define HAVE_WRITEV 1$(DL) >> $@
 	@echo $(DL)#define RETSIGTYPE void$(DL) >> $@
 	@echo $(DL)#define SIZEOF_STRUCT_IN_ADDR 4$(DL) >> $@
 	@echo $(DL)#define STDC_HEADERS 1$(DL) >> $@