diff --git a/Makefile.linux b/Makefile.linux
index 0949eb7..399ac5a 100644
--- a/Makefile.linux
+++ b/Makefile.linux
@@ -327,7 +327,7 @@ gen_packets : gen_packets.c ax25_pad.c hdlc_send.c fcs_calc.c gen_tone.c morse.c
 
 # Unit test for AFSK demodulator
 
-atest : atest.c fsk_fast_filter.h demod.c demod_afsk.c demod_9600.c \
+atest : atest.c demod.o demod_afsk.o demod_9600.c \
 		dsp.o hdlc_rec.c hdlc_rec2.o multi_modem.o rrbb.o \
 		fcs_calc.c ax25_pad.c decode_aprs.c dwgpsnmea.o \
 		dwgps.o dwgpsd.o serial_port.o telemetry.c latlong.c symbols.c tt_text.c textcolor.c \
@@ -692,7 +692,7 @@ itest : igate.c textcolor.c ax25_pad.c fcs_calc.c textcolor.o misc.a
 
 # Unit test for UDP reception with AFSK demodulator
 
-udptest : udp_test.c demod.c dsp.c demod_afsk.c demod_9600.c hdlc_rec.c hdlc_rec2.c multi_modem.c rrbb.c 
+udptest : udp_test.c demod.o dsp.c demod_afsk.o demod_9600.c hdlc_rec.c hdlc_rec2.c multi_modem.c rrbb.c \
 		fcs_calc.c ax25_pad.c decode_aprs.c symbols.c textcolor.c misc.a
 	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 	./udptest
@@ -701,7 +701,7 @@ demod.o : tune.h
 demod_afsk.o : tune.h
 demod_9600.o : tune.h
 
-testagc : atest.c demod.c dsp.c demod_afsk.c demod_9600.c hdlc_rec.c hdlc_rec2.o multi_modem.o rrbb.o \
+testagc : atest.c demod.o dsp.c demod_afsk.o demod_9600.c hdlc_rec.c hdlc_rec2.o multi_modem.o rrbb.o \
 		fcs_calc.c ax25_pad.c decode_aprs.c telemetry.c latlong.c symbols.c tune.h textcolor.c misc.a
 	$(CC) $(CFLAGS) -o atest $^ $(LDFLAGS)
 	./atest 02_Track_2.wav | grep "packets decoded in" > atest.out