diff --git a/Makefile b/Makefile
index bd67d467..e285aa02 100644
--- a/Makefile
+++ b/Makefile
@@ -47,6 +47,7 @@ clean:
 	rm -rf xlib $(xlib_obj)
 	rm -rf xlink $(xlink_obj)
 	rm -rf rgbfix $(rgbfix_obj)
+	rm -rf src/asm/asmy.c
 
 rgbasm: $(rgbasm_obj)
 	${CC} $(cflags) -o $@ $(rgbasm_obj) -lm