diff --git a/lib/OpenLayers/Projection.js b/lib/OpenLayers/Projection.js
index e12d108dd1..b02f4cb598 100644
--- a/lib/OpenLayers/Projection.js
+++ b/lib/OpenLayers/Projection.js
@@ -32,8 +32,10 @@ OpenLayers.Projection = OpenLayers.Class({
      *     pro4js projection object. 
      *
      * Parameters:
-     * options - {Object} An optional object with properties to set on the
-     *     format
+     * projCode - {String} A string identifying the Well Known Identifier for
+     *    the projection.
+     * options - {Object} An optional object to set additional properties
+     *     on the layer.
      *
      * Returns:
      * {<OpenLayers.Projection>} A projection object.