diff --git a/libc/kernel/common/linux/hid.h b/libc/kernel/common/linux/hid.h
index 450db19..dfd6acb 100644
--- a/libc/kernel/common/linux/hid.h
+++ b/libc/kernel/common/linux/hid.h
@@ -7,30 +7,33 @@
  ***   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 __HID_H
 #define __HID_H
-
 #define USB_INTERFACE_CLASS_HID 3
-
 #define USB_INTERFACE_SUBCLASS_BOOT 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define USB_INTERFACE_PROTOCOL_KEYBOARD 1
 #define USB_INTERFACE_PROTOCOL_MOUSE 2
-
 #define HID_REQ_GET_REPORT 0x01
 #define HID_REQ_GET_IDLE 0x02
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define HID_REQ_GET_PROTOCOL 0x03
 #define HID_REQ_SET_REPORT 0x09
 #define HID_REQ_SET_IDLE 0x0A
 #define HID_REQ_SET_PROTOCOL 0x0B
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define HID_DT_HID (USB_TYPE_CLASS | 0x01)
 #define HID_DT_REPORT (USB_TYPE_CLASS | 0x02)
 #define HID_DT_PHYSICAL (USB_TYPE_CLASS | 0x03)
-
 #define HID_MAX_DESCRIPTOR_SIZE 4096
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif
-
-