diff --git a/include/sbi/sbi_types.h b/include/sbi/sbi_types.h
index 136cd47e..39938420 100644
--- a/include/sbi/sbi_types.h
+++ b/include/sbi/sbi_types.h
@@ -54,6 +54,7 @@ typedef unsigned long		physical_size_t;
 
 #define NULL			((void *)0)
 
+#define __packed		__attribute__((packed))
 #define __noreturn		__attribute__((noreturn))
 
 #endif