diff --git a/dev/cli/discovery_cli.c b/dev/cli/discovery_cli.c
index b4420aa..061ccdb 100644
--- a/dev/cli/discovery_cli.c
+++ b/dev/cli/discovery_cli.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <arpa/inet.h>
 
 #include "discovery.h"