diff --git a/libc/kernel/common/linux/auxvec.h b/libc/kernel/common/linux/auxvec.h
index f8a0701..a6dcec9 100644
--- a/libc/kernel/common/linux/auxvec.h
+++ b/libc/kernel/common/linux/auxvec.h
@@ -7,34 +7,42 @@
  ***   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_AUXVEC_H
 #define _LINUX_AUXVEC_H
-
 #include <asm/auxvec.h>
-
 #define AT_NULL 0  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AT_IGNORE 1  
 #define AT_EXECFD 2  
 #define AT_PHDR 3  
 #define AT_PHENT 4  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AT_PHNUM 5  
 #define AT_PAGESZ 6  
 #define AT_BASE 7  
 #define AT_FLAGS 8  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AT_ENTRY 9  
 #define AT_NOTELF 10  
 #define AT_UID 11  
 #define AT_EUID 12  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AT_GID 13  
 #define AT_EGID 14  
 #define AT_PLATFORM 15  
 #define AT_HWCAP 16  
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define AT_CLKTCK 17  
-
 #define AT_SECURE 23  
-
 #define AT_VECTOR_SIZE 44  
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */