diff --git a/src/Makefile b/src/Makefile
index 734c658..25c00d6 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,16 +1,19 @@
 CFLAGS=-g -Wall
 LDFLAGS=-losmocore -losmogsm -losmovty -losmoabis -ltalloc
 
-all: osmo-e1-recorder osmo-e1cap-dump
+all: osmo-e1-recorder osmo-e1cap-dump hdlc-test
 
 osmo-e1-recorder: e1_recorder.o storage.o vty.o
 	$(CC) $(LDFLAGS) -o$@ $^
 
-osmo-e1cap-dump: e1cap_dump.o storage.o
+osmo-e1cap-dump: e1cap_dump.o storage.o flip_bits.o hdlc.o
+	$(CC) $(LDFLAGS) -o$@ $^
+
+hdlc-test: hdlc.o hdlc-test.o
 	$(CC) $(LDFLAGS) -o$@ $^
 
 %.o: %.c
 	$(CC) $(CFLAGS) -o $@ -c $^
 
 clean:
-	@rm *.o osmo-e1-recorder
+	@rm *.o osmo-e1-recorder osmo-e1cap-dump