diff --git a/libc/kernel/arch-x86/asm/socket.h b/libc/kernel/arch-x86/asm/socket.h
index 27d243f..b520169 100644
--- a/libc/kernel/arch-x86/asm/socket.h
+++ b/libc/kernel/arch-x86/asm/socket.h
@@ -7,57 +7,63 @@
  ***   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 _ASM_SOCKET_H
 #define _ASM_SOCKET_H
-
 #include <asm/sockios.h>
-
 #define SOL_SOCKET 1
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_DEBUG 1
 #define SO_REUSEADDR 2
 #define SO_TYPE 3
 #define SO_ERROR 4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_DONTROUTE 5
 #define SO_BROADCAST 6
 #define SO_SNDBUF 7
 #define SO_RCVBUF 8
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_SNDBUFFORCE 32
 #define SO_RCVBUFFORCE 33
 #define SO_KEEPALIVE 9
 #define SO_OOBINLINE 10
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_NO_CHECK 11
 #define SO_PRIORITY 12
 #define SO_LINGER 13
 #define SO_BSDCOMPAT 14
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_PASSCRED 16
 #define SO_PEERCRED 17
 #define SO_RCVLOWAT 18
 #define SO_SNDLOWAT 19
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_RCVTIMEO 20
 #define SO_SNDTIMEO 21
-
 #define SO_SECURITY_AUTHENTICATION 22
 #define SO_SECURITY_ENCRYPTION_TRANSPORT 23
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_SECURITY_ENCRYPTION_NETWORK 24
-
 #define SO_BINDTODEVICE 25
-
 #define SO_ATTACH_FILTER 26
 #define SO_DETACH_FILTER 27
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_PEERNAME 28
 #define SO_TIMESTAMP 29
 #define SCM_TIMESTAMP SO_TIMESTAMP
-
 #define SO_ACCEPTCONN 30
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SO_PEERSEC 31
 #define SO_PASSSEC 34
 #define SO_TIMESTAMPNS 35
 #define SCM_TIMESTAMPNS SO_TIMESTAMPNS
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif