diff --git a/include/winnt.h b/include/winnt.h
index aecc2af..cd81087 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -3400,6 +3400,8 @@
 #define MIN_ACL_REVISION ACL_REVISION2
 #define MAX_ACL_REVISION ACL_REVISION4
 
+#define ACL_REVISION 2
+
 typedef struct _ACL {
     BYTE AclRevision;
     BYTE Sbz1;
@@ -3893,11 +3895,6 @@
  *	ACLs of NT
  */
 
-#define	ACL_REVISION	2
-
-#define	ACL_REVISION1	1
-#define	ACL_REVISION2	2
-
 /* ACEs, directly starting after an ACL */
 typedef struct _ACE_HEADER {
 	BYTE	AceType;