diff --git a/core/net/rime/Makefile.rime b/core/net/rime/Makefile.rime
index ae231aa08..d29be3a70 100644
--- a/core/net/rime/Makefile.rime
+++ b/core/net/rime/Makefile.rime
@@ -1,3 +1,3 @@
 CONTIKI_SOURCEFILES += rimebuf.c queuebuf.c ctimer.c neighbor.c rime.c \
-               ibc.c uc.c suc.c ruc.c sibc.c sabc.c ccsabc.c abc.c abc-udp.c \
-               nf.c
+               ibc.c uc.c suc.c ruc.c sibc.c sabc.c abc.c \
+               nf.c # ccsabc.c abc-udp.c