diff --git a/include/netdb.h b/include/netdb.h
index 123ecb985c1e..8da2e8de8636 100644
--- a/include/netdb.h
+++ b/include/netdb.h
@@ -257,7 +257,7 @@ void	_endnetdnsent(void);
 struct hostent * _gethostbynisname(const char *, int);
 struct hostent * _gethostbynisaddr(const char *, int, int);
 void _map_v4v6_address(const char *, char *);
-void _map_v4v6_hostent(struct hostent *, char **, int *);
+void _map_v4v6_hostent(struct hostent *, char **, char **);
 __END_DECLS
 
 #endif /* !_NETDB_H_ */