diff --git a/libc/kernel/arch-arm/asm/module.h b/libc/kernel/arch-arm/asm/module.h
index 68b806a..046efa8 100644
--- a/libc/kernel/arch-arm/asm/module.h
+++ b/libc/kernel/arch-arm/asm/module.h
@@ -7,20 +7,25 @@
  ***   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_ARM_MODULE_H
 #define _ASM_ARM_MODULE_H
-
 struct mod_arch_specific
 {
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  int foo;
 };
-
 #define Elf_Shdr Elf32_Shdr
 #define Elf_Sym Elf32_Sym
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Elf_Ehdr Elf32_Ehdr
-
 #define MODULE_ARCH_VERMAGIC "ARMv" __stringify(__LINUX_ARM_ARCH__) " "
-
 #endif