diff --git a/lib/OpenLayers/Layer/WMS/Untiled.js b/lib/OpenLayers/Layer/WMS/Untiled.js
index cbc94715a4..afb875d546 100644
--- a/lib/OpenLayers/Layer/WMS/Untiled.js
+++ b/lib/OpenLayers/Layer/WMS/Untiled.js
@@ -181,6 +181,24 @@ OpenLayers.Layer.WMS.Untiled.prototype =
         this.moveTo();
     },
     
+    /** combine the layer's url with its params and these newParams. 
+    *   
+    *    Add the SRS parameter from 'projection' -- this is probably
+    *     more eloquently done via a setProjection() method, but this 
+    *     works for now and always.
+    * 
+    * @param {Object} newParams
+    * 
+    * @type String
+    */
+    getFullRequestString:function(newParams) {
+        var projection = this.map.getProjection();
+        this.params.SRS = (projection == "none") ? null : projection;
+
+        return OpenLayers.Layer.Grid.prototype.getFullRequestString.apply(
+                                                    this, arguments);
+    },
+    
     /** This function first removes the previous image div, then adds a new
      *   one according to the transparency property.
      *