diff --git a/libc/kernel/common/linux/zlib.h b/libc/kernel/common/linux/zlib.h
index 052adfe..0fb085a 100644
--- a/libc/kernel/common/linux/zlib.h
+++ b/libc/kernel/common/linux/zlib.h
@@ -7,74 +7,77 @@
  ***   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 _ZLIB_H
 #define _ZLIB_H
-
 #include <linux/zconf.h>
-
 struct internal_state;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 typedef struct z_stream_s {
  Byte *next_in;
  uInt avail_in;
  uLong total_in;
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  Byte *next_out;
  uInt avail_out;
  uLong total_out;
-
  char *msg;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  struct internal_state *state;
-
  void *workspace;
-
  int data_type;
  uLong adler;
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  uLong reserved;
 } z_stream;
-
 typedef z_stream *z_streamp;
-
 #define Z_NO_FLUSH 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Z_PARTIAL_FLUSH 1  
 #define Z_PACKET_FLUSH 2
 #define Z_SYNC_FLUSH 3
 #define Z_FULL_FLUSH 4
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Z_FINISH 5
 #define Z_BLOCK 6  
-
 #define Z_OK 0
 #define Z_STREAM_END 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Z_NEED_DICT 2
 #define Z_ERRNO (-1)
 #define Z_STREAM_ERROR (-2)
 #define Z_DATA_ERROR (-3)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Z_MEM_ERROR (-4)
 #define Z_BUF_ERROR (-5)
 #define Z_VERSION_ERROR (-6)
-
 #define Z_NO_COMPRESSION 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Z_BEST_SPEED 1
 #define Z_BEST_COMPRESSION 9
 #define Z_DEFAULT_COMPRESSION (-1)
-
 #define Z_FILTERED 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Z_HUFFMAN_ONLY 2
 #define Z_DEFAULT_STRATEGY 0
-
 #define Z_BINARY 0
 #define Z_ASCII 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define Z_UNKNOWN 2
-
 #define Z_DEFLATED 8
-
 #define zlib_deflateInit(strm, level)   zlib_deflateInit2((strm), (level), Z_DEFLATED, MAX_WBITS,   DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY)
 #define zlib_inflateInit(strm)   zlib_inflateInit2((strm), DEF_WBITS)
-
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #if !defined(_Z_UTIL_H) && !defined(NO_DUMMY_DECL)
  struct internal_state {int dummy;};
 #endif
-
 #endif
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */