diff --git a/idlib/containers/List.h b/idlib/containers/List.h
index ddb214f..7a328f0 100644
--- a/idlib/containers/List.h
+++ b/idlib/containers/List.h
@@ -29,6 +29,7 @@ If you have questions concerning this license or the applicable additional terms
 #ifndef __LIST_H__
 #define __LIST_H__
 
+#include "sys/platform.h"
 /*
 ===============================================================================