diff --git a/ChangeLog b/ChangeLog
index b8fa36b67..85ef91da1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2005-12-25  Yoshinori K. Okuji  <okuji@enbug.org>
+
+	* include/grub/i386/pc/boot.h (GRUB_BOOT_MACHINE_DRP_ADDR):
+	Removed.
+	(GRUB_BOOT_MACHINE_DRP_SIZE): Likewise.
+
 2005-12-25  Yoshinori K. Okuji  <okuji@enbug.org>
 
 	* kern/env.c (grub_env_set): Check if ENV->VALUE instead of
diff --git a/include/grub/i386/pc/boot.h b/include/grub/i386/pc/boot.h
index 967b499f1..047cf38a6 100644
--- a/include/grub/i386/pc/boot.h
+++ b/include/grub/i386/pc/boot.h
@@ -66,12 +66,6 @@
    cannot straddle a 64K boundary.  */
 #define GRUB_BOOT_MACHINE_BUFFER_SEG	0x7000
 
-/* The address of drive parameters.  */
-#define GRUB_BOOT_MACHINE_DRP_ADDR	0x7f00
-
-/* The size of drive parameters.  */
-#define GRUB_BOOT_MACHINE_DRP_SIZE	0x42
-
 /* The flag for BIOS drive number to designate a hard disk vs. a
    floppy.  */
 #define GRUB_BOOT_MACHINE_BIOS_HD_FLAG	0x80