diff --git a/makefile b/makefile
index 4247620..6beb20a 100644
--- a/makefile
+++ b/makefile
@@ -36,7 +36,7 @@ $(program_obj_filesobj_files): %.o: %.c
 # Unit Tests
 # --------------------------
 unitTestsStack: stack.o test_stack.c $(unityfolder)/unity.c
-	$(CC) $(FLAGS) $^ -o $@
+	$(CC) $(FLAGS) $^ -o $@ $(unityfolder)/unity.c
 
 
 # --------------------------