diff --git a/makefile b/makefile
index 297806d..df33714 100644
--- a/makefile
+++ b/makefile
@@ -22,13 +22,13 @@ test_cli: test_cli.o engine.o cli.o transport.o wav_io.o dispatcher.o
 test_double_process: test_double_process.o engine.o transport.o wav_io.o
 	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 
-test_stress: test_stress.o dispatcher.o
+test_stress: test_stress.o engine.o wav_io.o dispatcher.o
 	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 
 test_wav_io: test_wav_io.o wav_io.o
 	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 
-test_stress.o: test_stress.c dispatcher.h
+test_stress.o: test_stress.c dispatcher.h engine.h wav_io.h
 	$(CC) $(CFLAGS) -c -o $@ $<
 
 main.o: main.c engine.h tui.h transport.h