diff --git a/lib/OpenLayers/Layer/GeoRSS.js b/lib/OpenLayers/Layer/GeoRSS.js
index c9a6285a9b..49d44df71b 100644
--- a/lib/OpenLayers/Layer/GeoRSS.js
+++ b/lib/OpenLayers/Layer/GeoRSS.js
@@ -11,11 +11,6 @@ OpenLayers.Layer.GeoRSS = Class.create();
 OpenLayers.Layer.GeoRSS.prototype = 
   Object.extend( new OpenLayers.Layer.Markers(), {
 
-    /** GeoRSS layer is never a base layer. 
-     * @type Boolean
-     */
-    isBaseLayer: false,
-    
     /** store url of text file
     * @type str */
     location:null,
diff --git a/lib/OpenLayers/Layer/Text.js b/lib/OpenLayers/Layer/Text.js
index 6fb4adfc85..034ead100b 100644
--- a/lib/OpenLayers/Layer/Text.js
+++ b/lib/OpenLayers/Layer/Text.js
@@ -11,12 +11,6 @@ OpenLayers.Layer.Text = Class.create();
 OpenLayers.Layer.Text.prototype = 
   Object.extend( new OpenLayers.Layer.Markers(), {
 
-    /** Text layer is never a base layer. 
-     * 
-     * @type Boolean
-     */
-    isBaseLayer: false,
-    
     /** store url of text file - this should be specified in the 
      *   "options" hashtable
     * @type str */