diff --git a/ares__get_hostent.c b/ares__get_hostent.c
index 29df0dd9..ca6f2f1c 100644
--- a/ares__get_hostent.c
+++ b/ares__get_hostent.c
@@ -30,6 +30,7 @@
 
 #include "ares.h"
 #include "ares_private.h"
+#include "inet_net_pton.h"
 
 int ares__get_hostent(FILE *fp, int family, struct hostent **host)
 {