--- include/cdio++/iso9660.hpp.orig	2010-06-17 16:15:41.000000000 +0000
+++ include/cdio++/iso9660.hpp	2010-06-17 16:17:42.000000000 +0000
@@ -27,6 +27,8 @@
 #ifndef __ISO9660_HPP__
 #define __ISO9660_HPP__
 
+#include <stdlib.h>
+
 #include <cdio/iso9660.h>
 #include <cdio++/cdio.hpp>
 #include <string.h>