diff --git a/markerclusterer/src/markerclusterer.js b/markerclusterer/src/markerclusterer.js
index 37f1afa5..5f08eac6 100755
--- a/markerclusterer/src/markerclusterer.js
+++ b/markerclusterer/src/markerclusterer.js
@@ -13,6 +13,7 @@
  */
 
 /**
+ * @license
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at