diff --git a/src/main.c b/src/main.c
index de5decd..08b36d2 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,3 +1,5 @@
+#include <stdlib.h>
+#include <unistd.h>
 #include <syslog.h>
 #include <ftdi.h>