diff --git a/makefile b/makefile
index 0fae45b..68c48a8 100644
--- a/makefile
+++ b/makefile
@@ -7,7 +7,7 @@ all: jack-looper test_engine test_tui test_gui test_cli test_stress test_wav_io
 jack-looper: main.o engine.o tui.o gui.o cli.o transport.o dispatcher.o lib/microui.o wav_io.o
 	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 
-test_engine: test_engine.o engine.o transport.o wav_io.o
+test_engine: test_engine.o engine.o transport.o wav_io.o dispatcher.o
 	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 
 test_tui: test_tui.o engine.o transport.o wav_io.o