diff --git a/avr/boards.txt b/avr/boards.txt
index 50d570d..8ae88c0 100644
--- a/avr/boards.txt
+++ b/avr/boards.txt
@@ -8,7 +8,7 @@ atmega328bb.upload.speed=57600
 
 atmega328bb.bootloader.low_fuses=0xE2
 atmega328bb.bootloader.high_fuses=0xDA
-atmega328bb.bootloader.extended_fuses=0x05
+atmega328bb.bootloader.extended_fuses=0xFD
 
 atmega328bb.bootloader.file=atmega/ATmegaBOOT_168_atmega328_pro_8MHz.hex
 atmega328bb.bootloader.unlock_bits=0x3F