diff --git a/libc/netbsd/net/getnameinfo.c b/libc/netbsd/net/getnameinfo.c
index d3d0011..313b2bf 100644
--- a/libc/netbsd/net/getnameinfo.c
+++ b/libc/netbsd/net/getnameinfo.c
@@ -187,7 +187,7 @@
 	if (addrStr == NULL) {
 		goto exit;
 	}
-	if (fprintf(proxy, "gethostbyaddr %s %d %d", addrStr, addrLen, addrFamily) < 0) {
+	if (fprintf(proxy, "0 gethostbyaddr %s %d %d", addrStr, addrLen, addrFamily) < 0) {
 		goto exit;
 	}