diff --git a/arch/platform/zoul/platform.c b/arch/platform/zoul/platform.c
index 4e5c7cc39..48e90cdfe 100644
--- a/arch/platform/zoul/platform.c
+++ b/arch/platform/zoul/platform.c
@@ -69,6 +69,7 @@
 #include <stdint.h>
 #include <string.h>
 #include <stdio.h>
+#include <stdlib.h>
 /*---------------------------------------------------------------------------*/
 /* Log configuration */
 #include "sys/log.h"