diff --git a/lib/OpenLayers/Layer/Grid.js b/lib/OpenLayers/Layer/Grid.js
index 243de05a14..0ad307eed9 100644
--- a/lib/OpenLayers/Layer/Grid.js
+++ b/lib/OpenLayers/Layer/Grid.js
@@ -7,6 +7,7 @@
 /**
  * @requires OpenLayers/Layer/HTTPRequest.js
  * @requires OpenLayers/Console.js
+ * @requires OpenLayers/Tile/Image.js
  */
 
 /**