diff --git a/libc/netbsd/resolv/res_send.c b/libc/netbsd/resolv/res_send.c
index 696f8cf..b118956 100644
--- a/libc/netbsd/resolv/res_send.c
+++ b/libc/netbsd/resolv/res_send.c
@@ -222,7 +222,7 @@
  * author:
  *	paul vixie, 29may94
  */
-int
+__LIBC_HIDDEN__ int
 res_ourserver_p(const res_state statp, const struct sockaddr *sa) {
 	const struct sockaddr_in *inp, *srv;
 	const struct sockaddr_in6 *in6p, *srv6;