--- Libc/Libc-1044.10.1/include/sys/acl.h
+++ Libc/Libc-825.26/include/sys/acl.h
@@ -43,7 +43,6 @@
 #define __DARWIN_ACL_READ_SECURITY		(1<<11)
 #define __DARWIN_ACL_WRITE_SECURITY		(1<<12)
 #define __DARWIN_ACL_CHANGE_OWNER		(1<<13)
-#define __DARWIN_ACL_SYNCHRONIZE		(1<<20)
 
 #define __DARWIN_ACL_EXTENDED_ALLOW		1
 #define __DARWIN_ACL_EXTENDED_DENY		2
@@ -83,7 +82,6 @@
 	ACL_READ_SECURITY	= __DARWIN_ACL_READ_SECURITY,
 	ACL_WRITE_SECURITY	= __DARWIN_ACL_WRITE_SECURITY,
 	ACL_CHANGE_OWNER	= __DARWIN_ACL_CHANGE_OWNER,
-	ACL_SYNCHRONIZE		= __DARWIN_ACL_SYNCHRONIZE,
 } acl_perm_t;
 
 /* 23.2.5 ACL entry tag type bits - nonstandard */