diff --git a/libc/kernel/common/linux/random.h b/libc/kernel/common/linux/random.h
index d2bef97..adb80e2 100644
--- a/libc/kernel/common/linux/random.h
+++ b/libc/kernel/common/linux/random.h
@@ -7,29 +7,30 @@
  ***   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_RANDOM_H
 #define _LINUX_RANDOM_H
-
 #include <linux/ioctl.h>
-
 #define RNDGETENTCNT _IOR( 'R', 0x00, int )
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define RNDADDTOENTCNT _IOW( 'R', 0x01, int )
-
 #define RNDGETPOOL _IOR( 'R', 0x02, int [2] )
-
 #define RNDADDENTROPY _IOW( 'R', 0x03, int [2] )
-
 #define RNDZAPENTCNT _IO( 'R', 0x04 )
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define RNDCLEARPOOL _IO( 'R', 0x06 )
-
 struct rand_pool_info {
  int entropy_count;
  int buf_size;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  __u32 buf[0];
 };
-
 #endif