diff --git a/libc/kernel/arch-x86/asm/ptrace.h b/libc/kernel/arch-x86/asm/ptrace.h
index 4743e0f..2560e5a 100644
--- a/libc/kernel/arch-x86/asm/ptrace.h
+++ b/libc/kernel/arch-x86/asm/ptrace.h
@@ -7,68 +7,75 @@
  ***   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_X86_PTRACE_H
 #define _ASM_X86_PTRACE_H
-
 #include <linux/compiler.h>  
 #include <asm/ptrace-abi.h>
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #ifndef __ASSEMBLY__
-
 #ifdef __i386__
-
 struct pt_regs {
  long ebx;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long ecx;
  long edx;
  long esi;
  long edi;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long ebp;
  long eax;
  int xds;
  int xes;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int xfs;
-
  long orig_eax;
  long eip;
  int xcs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  long eflags;
  long esp;
  int xss;
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #else
-
 struct pt_regs {
  unsigned long r15;
  unsigned long r14;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long r13;
  unsigned long r12;
  unsigned long rbp;
  unsigned long rbx;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long r11;
  unsigned long r10;
  unsigned long r9;
  unsigned long r8;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long rax;
  unsigned long rcx;
  unsigned long rdx;
  unsigned long rsi;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long rdi;
  unsigned long orig_rax;
-
  unsigned long rip;
  unsigned long cs;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  unsigned long eflags;
  unsigned long rsp;
  unsigned long ss;
-
 };
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
 #endif
-
 #endif