diff --git a/makefile b/makefile
index 49e2dd4..94d112a 100644
--- a/makefile
+++ b/makefile
@@ -16,9 +16,6 @@ test_tui: test_tui.o engine.o
 test_gui: test_gui.o gui.o engine.o
 	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 
-test_gui: test_gui.o gui.o engine.o
-	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
-
 main.o: main.c engine.h tui.h
 	$(CC) $(CFLAGS) -c -o $@ $<
 
@@ -40,14 +37,12 @@ test_tui.o: test_tui.c engine.h tui.h
 test_gui.o: test_gui.c gui.h engine.h
 	$(CC) $(CFLAGS) -c -o $@ $<
 
-test_gui.o: test_gui.c gui.h engine.h
-	$(CC) $(CFLAGS) -c -o $@ $<
-
 .PHONY: all clean test
 
 clean:
-	rm -f *.o jack-looper test_engine test_tui
+	rm -f *.o jack-looper test_engine test_tui test_gui
 
-test: test_engine test_tui
+test: test_engine test_tui test_gui
 	./test_engine
 	./test_tui
+	./test_gui
diff --git a/test_gui.c b/test_gui.c
index e9ee40b..f5728a5 100644
--- a/test_gui.c
+++ b/test_gui.c
@@ -19,35 +19,3 @@ int main(void)
 
     return ret;
 }
-#include <stdio.h>
-#include <stdlib.h>
-#include "engine.h"
-#include "gui.h"
-
-int main(void) {
-    Engine engine;
-    if (engine_init(&engine, "test-gui") != 0) {
-        fprintf(stderr, "Failed to initialize engine\n");
-        return 1;
-    }
-    engine.control_channel = 0;
-    int ret = gui_main(&engine);
-    engine_cleanup(&engine);
-    return ret;
-}
-#include <stdio.h>
-#include <stdlib.h>
-#include "engine.h"
-#include "gui.h"
-
-int main(void) {
-    Engine engine;
-    if (engine_init(&engine, "test-gui") != 0) {
-        fprintf(stderr, "Failed to initialize engine\n");
-        return 1;
-    }
-    engine.control_channel = 0;
-    int ret = gui_main(&engine);
-    engine_cleanup(&engine);
-    return ret;
-}