diff --git a/Kernel/types.h b/Kernel/types.h
index 8469e5cd6f..3b4b609454 100644
--- a/Kernel/types.h
+++ b/Kernel/types.h
@@ -4,6 +4,7 @@
 
 #define PACKED __attribute__ ((packed))
 #define NORETURN __attribute__ ((noreturn))
+#define ALWAYS_INLINE __attribute__ ((always_inline))
 #define PURE __attribute__ ((pure))
 #define PUBLIC
 #define PRIVATE static