diff --git a/addons/xterm-addon-ligatures/bin/download-fonts.js b/addons/xterm-addon-ligatures/bin/download-fonts.js
index 0342f848..12790fb5 100644
--- a/addons/xterm-addon-ligatures/bin/download-fonts.js
+++ b/addons/xterm-addon-ligatures/bin/download-fonts.js
@@ -1,3 +1,8 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
 const fs = require('fs');
 const path = require('path');
 const util = require('util');