diff --git a/common/bootloader.c b/common/bootloader.c
index 023220414bb..f9802d36c52 100644
--- a/common/bootloader.c
+++ b/common/bootloader.c
@@ -12,16 +12,18 @@
 
 
 /* Boot Section Size in *BYTEs*
- * Teensy   halfKay     512
- * Teensy++ halfKay     1024
- * Atmel DFU loader     4096
- * LUFA bootloader      4096
+ *   Teensy   halfKay    512
+ *   Teensy++ halfKay    1024
+ *   Atmel DFU loader    4096
+ *   LUFA bootloader     4096
+ *   USBaspLoader        2048
  */
-#ifndef BOOT_SIZE
-#define BOOT_SIZE 512
+#ifndef BOOTLOADER_SIZE
+#warn To use bootloader_jump() you need to define BOOTLOADER_SIZE in config.h.
 #endif
+
 #define FLASH_SIZE          (FLASHEND + 1L)
-#define BOOTLOADER_START    (FLASH_SIZE - BOOT_SIZE)
+#define BOOTLOADER_START    (FLASH_SIZE - BOOTLOADER_SIZE)
 
 
 /* 
diff --git a/keyboard/gh60/Makefile.lufa b/keyboard/gh60/Makefile.lufa
index 65b6240efc6..2076c919ca0 100644
--- a/keyboard/gh60/Makefile.lufa
+++ b/keyboard/gh60/Makefile.lufa
@@ -107,13 +107,6 @@ CONSOLE_ENABLE = yes	# Console for debug(+400)
 #PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
 
 
-# Boot Section Size in bytes
-#   Teensy halfKay   512
-#   Atmel DFU loader 4096
-#   LUFA bootloader  4096
-OPT_DEFS += -DBOOT_SIZE=4096
-
-
 # Search Path
 VPATH += $(TARGET_DIR)
 VPATH += $(TOP_DIR)
diff --git a/keyboard/gh60/config.h b/keyboard/gh60/config.h
index 3a7a3f97fbf..be4d72384ea 100644
--- a/keyboard/gh60/config.h
+++ b/keyboard/gh60/config.h
@@ -25,12 +25,20 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define DEVICE_VER      0x0001
 #define MANUFACTURER    geekhack
 #define PRODUCT         GH60
-
-
 /* message strings */
 #define DESCRIPTION     t.m.k. keyboard firmware for GH60
 
 
+/* Boot Section Size in *BYTEs*
+ *   Teensy   halfKay    512
+ *   Teensy++ halfKay    1024
+ *   Atmel DFU loader    4096
+ *   LUFA bootloader     4096
+ *   USBaspLoader        2048
+ */
+#define BOOTLOADER_SIZE 4096
+
+
 /* matrix size */
 #define MATRIX_ROWS 5
 #define MATRIX_COLS 14
diff --git a/keyboard/hhkb/Makefile.iwrap b/keyboard/hhkb/Makefile.iwrap
index 3ec1a31645c..f87df0d2bba 100644
--- a/keyboard/hhkb/Makefile.iwrap
+++ b/keyboard/hhkb/Makefile.iwrap
@@ -49,15 +49,6 @@ EXTRAKEY_ENABLE = yes	# Audio control and System control
 #NKRO_ENABLE = yes	# USB Nkey Rollover
 
 
-# Boot Section Size in *BYTEs*
-#   Teensy   halfKay    512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-#   USBaspLoader        2048
-OPT_DEFS += -DBOOT_SIZE=2048
-
-
 
 #---------------- Programming Options --------------------------
 AVRDUDE = avrdude
diff --git a/keyboard/hhkb/Makefile.lufa b/keyboard/hhkb/Makefile.lufa
index 75c0310d6ec..e8b2414d392 100644
--- a/keyboard/hhkb/Makefile.lufa
+++ b/keyboard/hhkb/Makefile.lufa
@@ -107,14 +107,6 @@ CONSOLE_ENABLE = yes	# Console for debug
 #PS2_MOUSE_ENABLE = yes	# PS/2 mouse(TrackPoint) support
 
 
-# Boot Section Size in *BYTEs*
-#   Teensy   halfKay    512
-#   Teensy++ halfKay    1024
-#   Atmel DFU loader    4096
-#   LUFA bootloader     4096
-OPT_DEFS += -DBOOT_SIZE=1024
-
-
 # Search Path
 VPATH += $(TARGET_DIR)
 VPATH += $(TOP_DIR)
diff --git a/keyboard/hhkb/config.h b/keyboard/hhkb/config.h
index 72e4d26e921..3bfeb45ed4c 100644
--- a/keyboard/hhkb/config.h
+++ b/keyboard/hhkb/config.h
@@ -27,11 +27,19 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define DEVICE_VER      0x0103
 #define MANUFACTURER    t.m.k.
 #define PRODUCT         HHKB mod
-
-
 #define DESCRIPTION     t.m.k. keyboard firmware for HHKB mod
 
 
+/* Boot Section Size in *BYTEs*
+ *   Teensy   halfKay    512
+ *   Teensy++ halfKay    1024
+ *   Atmel DFU loader    4096
+ *   LUFA bootloader     4096
+ *   USBaspLoader        2048
+ */
+#define BOOTLOADER_SIZE 1024
+
+
 /* matrix size */
 #define MATRIX_ROWS 8
 #define MATRIX_COLS 8
diff --git a/keyboard/hhkb/config_iwrap.h b/keyboard/hhkb/config_iwrap.h
index d50b704d72b..2c18cd817a5 100644
--- a/keyboard/hhkb/config_iwrap.h
+++ b/keyboard/hhkb/config_iwrap.h
@@ -27,6 +27,16 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define DESCRIPTION     t.m.k. keyboard firmware for HHKB mod
 
 
+/* Boot Section Size in *BYTEs*
+ *   Teensy   halfKay    512
+ *   Teensy++ halfKay    1024
+ *   Atmel DFU loader    4096
+ *   LUFA bootloader     4096
+ *   USBaspLoader        2048
+ */
+#define BOOTLOADER_SIZE 2048
+
+
 /* matrix size */
 #define MATRIX_ROWS 8
 #define MATRIX_COLS 8