diff --git a/libc/kernel/common/linux/stat.h b/libc/kernel/common/linux/stat.h
index 0d757f4..5ab82f2 100644
--- a/libc/kernel/common/linux/stat.h
+++ b/libc/kernel/common/linux/stat.h
@@ -7,48 +7,55 @@
  ***   structures, and macros generated from the original header, and thus,
  ***   contains no copyrightable information.
  ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
  ****************************************************************************
  ****************************************************************************/
 #ifndef _LINUX_STAT_H
 #define _LINUX_STAT_H
-
 #if !defined(__GLIBC__) || __GLIBC__ < 2
-
 #define S_IFMT 00170000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define S_IFSOCK 0140000
 #define S_IFLNK 0120000
 #define S_IFREG 0100000
 #define S_IFBLK 0060000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define S_IFDIR 0040000
 #define S_IFCHR 0020000
 #define S_IFIFO 0010000
 #define S_ISUID 0004000
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define S_ISGID 0002000
 #define S_ISVTX 0001000
-
 #define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
 #define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
-
 #define S_IRWXU 00700
 #define S_IRUSR 00400
 #define S_IWUSR 00200
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define S_IXUSR 00100
-
 #define S_IRWXG 00070
 #define S_IRGRP 00040
 #define S_IWGRP 00020
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define S_IXGRP 00010
-
 #define S_IRWXO 00007
 #define S_IROTH 00004
 #define S_IWOTH 00002
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define S_IXOTH 00001
-
 #endif
-
 #endif