# MCU name
MCU = atmega32u4
-# Boot Section Size in *bytes*
-# Teensy halfKay 512
-# Teensy++ halfKay 1024
-# Atmel DFU loader 4096
-# LUFA bootloader 4096
-# USBaspLoader 2048
-OPT_DEFS += -DBOOTLOADER_SIZE=4096
-
+# Bootloader selection
+# Teensy halfkay
+# Pro Micro caterina
+# Atmel DFU atmel-dfu
+# LUFA DFU lufa-dfu
+# QMK DFU qmk-dfu
+# ATmega32A bootloadHID
+# ATmega328P USBasp
+BOOTLOADER = atmel-dfu
# Build Options
# change yes to no to disable