diff --git a/Events/KEvents.c b/Events/KEvents.c
index a6ebd00..d316b6f 100644
--- a/Events/KEvents.c
+++ b/Events/KEvents.c
@@ -21,6 +21,7 @@
 
 #include <stdbool.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <errno.h>
 
 #include "SystemK.h"