diff --git a/avr/Makefile b/avr/Makefile
index a1b27d0..1c7118b 100644
--- a/avr/Makefile
+++ b/avr/Makefile
@@ -13,7 +13,7 @@ OBJCOPY_FLAGS	= -S
 
 AVRDUDE		= avrdude
 AVRDUDE_DEVICE	= /dev/cu.usbmodem1411
-AVRDUDE_FLAGS	= -C ./avrdude.conf -c arduino -p atmega328p -b 115200 -D \
+AVRDUDE_FLAGS	= -c arduino -p atmega328p -b 115200 -D \
 		  -P $(AVRDUDE_DEVICE)
 
 HEADERS_LOCAL	=