diff --git a/discardd.c b/discardd.c
index 3297c92..01b2e1b 100644
--- a/discardd.c
+++ b/discardd.c
@@ -1,6 +1,6 @@
 /*
  * discard
- * Written in 2020 by Lucas
+ * Written in 2020-2021 by Lucas
  * CC0 1.0 Universal/Public domain - No rights reserved
  *
  * To the extent possible under law, the author(s) have dedicated all
@@ -26,6 +26,7 @@ usage(void)
 int
 main(int argc, char *argv[])
 {
+	const char *port = NULL;
 	int ch, do_tcp, do_udp;
 
 	do_tcp = do_udp = 0;
@@ -44,6 +45,8 @@ main(int argc, char *argv[])
 	argc -= optind;
 	argv += optind;
 
+	port = geteuid() == 0 ? "discard" : "9999";
+
 	if (argc > 0)
 		usage();
 	if (!do_tcp && !do_udp)