diff --git a/include/stddef.h b/include/stddef.h
index ecc5eb94ce..bcd09d249b 100644
--- a/include/stddef.h
+++ b/include/stddef.h
@@ -65,7 +65,7 @@
  * Reference: Opengroup.org
  */
 
-#define offsetof(a,b) ((size_t)(&(((a *)(0))->b)))
+#define offsetof(type, member) ((size_t)(uintptr_t)&(((type *)0)->member))
 
 /****************************************************************************
  * Type Definitions