diff --git a/lib/OpenLayers/Layer.js b/lib/OpenLayers/Layer.js
index 0e300b836d..52339a0e3d 100644
--- a/lib/OpenLayers/Layer.js
+++ b/lib/OpenLayers/Layer.js
@@ -5,6 +5,7 @@
 
 /**
  * @requires OpenLayers/Map.js
+ * @requires OpenLayers/Projection.js
  * 
  * Class: OpenLayers.Layer
  */