diff --git a/lib/system/generic/sys.h b/lib/system/generic/sys.h
index 64d4334e..0f7aa68b 100644
--- a/lib/system/generic/sys.h
+++ b/lib/system/generic/sys.h
@@ -17,6 +17,7 @@
 #define __METAL_GENERIC_SYS__H__
 
 #include <limits.h>
+#include <metal/cpu.h>
 #include <metal/errno.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -44,6 +45,8 @@ struct metal_state {
 	struct metal_common_state common;
 };
 
+#define metal_yield() metal_cpu_yield()
+
 #ifdef METAL_INTERNAL
 
 /**