diff --git a/src/imagetilesource.js b/src/imagetilesource.js
index f4ef5fa9..18059f87 100644
--- a/src/imagetilesource.js
+++ b/src/imagetilesource.js
@@ -171,9 +171,7 @@
          * @param {Number} level
          * @param {OpenSeadragon.Point} point
          */
-        getTileAtPoint: function (level, point) {
-            return new $.Point(0, 0);
-        },
+        getTileAtPoint: $.TileSource.prototype.getTileAtPoint,
         /**
          * Retrieves a tile url
          * @function
diff --git a/src/legacytilesource.js b/src/legacytilesource.js
index b661b967..59732915 100644
--- a/src/legacytilesource.js
+++ b/src/legacytilesource.js
@@ -174,9 +174,7 @@ $.extend( $.LegacyTileSource.prototype, $.TileSource.prototype, /** @lends OpenS
      * @param {Number} level
      * @param {OpenSeadragon.Point} point
      */
-    getTileAtPoint: function( level, point ) {
-        return new $.Point( 0, 0 );
-    },
+    getTileAtPoint: $.TileSource.prototype.getTileAtPoint,
 
 
     /**