diff --git a/libc/kernel/common/linux/ipc.h b/libc/kernel/common/linux/ipc.h
index 54766d5..290189c 100644
--- a/libc/kernel/common/linux/ipc.h
+++ b/libc/kernel/common/linux/ipc.h
@@ -7,42 +7,45 @@
  ***   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_IPC_H
 #define _LINUX_IPC_H
-
 #include <linux/types.h>
-
 #define IPC_PRIVATE ((__kernel_key_t) 0) 
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct ipc_perm
 {
  __kernel_key_t key;
  __kernel_uid_t uid;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __kernel_gid_t gid;
  __kernel_uid_t cuid;
  __kernel_gid_t cgid;
  __kernel_mode_t mode;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned short seq;
 };
-
 #include <asm/ipcbuf.h>
-
 #define IPC_CREAT 00001000  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPC_EXCL 00002000  
 #define IPC_NOWAIT 00004000  
-
 #define IPC_DIPC 00010000  
 #define IPC_OWN 00020000  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPC_RMID 0  
 #define IPC_SET 1  
 #define IPC_STAT 2  
 #define IPC_INFO 3  
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define IPC_OLD 0  
 #define IPC_64 0x0100  
-
 #endif
-