diff --git a/kernel/include/hos_defines.h b/kernel/include/hos_defines.h
index c6d281a..e4a4a87 100644
--- a/kernel/include/hos_defines.h
+++ b/kernel/include/hos_defines.h
@@ -2,6 +2,8 @@
 #ifndef HOS_DEFINES_H
 #define HOS_DEFINES_H
 
+#include "hos_types.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif