diff --git a/src/maa.c b/src/maa.c
index 9ab9322..2f87123 100644
--- a/src/maa.c
+++ b/src/maa.c
@@ -24,6 +24,7 @@
  */
 
 #include <stddef.h>
+#include <stdlib.h>
 
 #include "maa.h"
 #include "intel_galileo_rev_d.h"