diff --git a/ares/ares_free_hostent.c b/ares/ares_free_hostent.c
index 623e1e247a..f07fd7c15b 100644
--- a/ares/ares_free_hostent.c
+++ b/ares/ares_free_hostent.c
@@ -18,7 +18,7 @@
 #include "ares_setup.h"
 #include <stdlib.h>
 
-#if !defined(WIN32) || defined(WATT32)
+#ifdef HAVE_NETDB_H
 #include <netdb.h>
 #endif
 
diff --git a/ares/ares_private.h b/ares/ares_private.h
index 036062dcdc..37f3967e8d 100644
--- a/ares/ares_private.h
+++ b/ares/ares_private.h
@@ -30,7 +30,7 @@
 #include <stdio.h>
 #include <sys/types.h>
 
-#if !defined(WIN32) || defined(WATT32)
+#ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif