diff --git a/lib/OpenLayers/Layer/TileCache.js b/lib/OpenLayers/Layer/TileCache.js
index b3c0c2dc69..34c758dfa0 100644
--- a/lib/OpenLayers/Layer/TileCache.js
+++ b/lib/OpenLayers/Layer/TileCache.js
@@ -6,6 +6,7 @@
 
 /**
  * @requires OpenLayers/Layer/Grid.js
+ * @requires OpenLayers/Tile/Image.js
  */
 
 /**