diff --git a/cpu/avr/Makefile.avr b/cpu/avr/Makefile.avr
index 5b6bd103a..ec75afba9 100644
--- a/cpu/avr/Makefile.avr
+++ b/cpu/avr/Makefile.avr
@@ -1,4 +1,4 @@
-# $Id: Makefile.avr,v 1.18 2010/02/07 07:43:35 adamdunkels Exp $
+# $Id: Makefile.avr,v 1.19 2010/02/07 23:05:20 adamdunkels Exp $
 
 ### Check if we are running under Windows
 
@@ -32,7 +32,7 @@ ifdef USB
 override RF230BB = 0
 CONTIKI_CPU_DIRS            += dev/usb dev/usb/serial dev/usb/rndis dev/usb/storage
 CONTIKI_TARGET_SOURCEFILES  += $(USB)
-AVR        = clock.c mtarch.c eeprom.c flash.c leds-arch.c 
+AVR        = clock.c mtarch.c eeprom.c flash.c leds-arch.c watchdog.c
 endif
 
 #For a coffee file system, the application makefile can define COFFEE_FILES=n