diff --git a/Makefile.include b/Makefile.include
index 824ad0d25..3e8e285dd 100644
--- a/Makefile.include
+++ b/Makefile.include
@@ -47,10 +47,10 @@ CFLAGS += -DCONTIKI_TARGET_$(TARGET_UPPERCASE)
 
 include $(CONTIKI)/core/net/rime/Makefile.rime
 include $(CONTIKI)/core/net/mac/Makefile.mac
-SYSTEM  = process.c procinit.c autostart.c elfloader.c profile.c timetable.c timetable-aggregate.c
+SYSTEM  = process.c procinit.c autostart.c elfloader.c profile.c timetable.c timetable-aggregate.c compower.c
 THREADS = mt.c
 LIBS    = memb.c timer.c list.c etimer.c energest.c rtimer.c stimer.c \
-          print-stats.c ifft.c crc16.c random.c checkpoint.c
+          print-stats.c ifft.c crc16.c random.c checkpoint.c ringbuf.c
 
 ifdef UIP_CONF_IPV6
 CFLAGS += -DUIP_CONF_IPV6