diff --git a/demo/sample.c b/demo/sample.c
index 7feb945..34ab95e 100644
--- a/demo/sample.c
+++ b/demo/sample.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: MIT-open-group
+ *
  * Copyright (c) 1994  Sony Corporation
  *
  * Permission is hereby granted, free of charge, to any person obtaining
@@ -24,7 +26,6 @@
  * shall not be used in advertising or otherwise to promote the sale, use
  * or other dealings in this Software without prior written authorization
  * from Sony Corporation.
- *
  */
 
 #include <locale.h>