diff --git a/src/world.js b/src/world.js
index 9e67a1c1..79967d5a 100644
--- a/src/world.js
+++ b/src/world.js
@@ -104,7 +104,7 @@ $.extend( $.World.prototype, $.EventSource.prototype, /** @lends OpenSeadragon.W
      * @returns {OpenSeadragon.TiledImage} The item at the specified index.
      */
     getItemAt: function( index ) {
-        $.console.assert(index !== 'undefined', "[World.getItemAt] index is required");
+        $.console.assert(index !== undefined, "[World.getItemAt] index is required");
         return this._items[ index ];
     },
 
@@ -133,7 +133,7 @@ $.extend( $.World.prototype, $.EventSource.prototype, /** @lends OpenSeadragon.W
      */
     setItemIndex: function( item, index ) {
         $.console.assert(item, "[World.setItemIndex] item is required");
-        $.console.assert(index !== 'undefined', "[World.setItemIndex] index is required");
+        $.console.assert(index !== undefined, "[World.setItemIndex] index is required");
 
         var oldIndex = this.getIndexOfItem( item );
 
diff --git a/test/demo/collections/main.js b/test/demo/collections/main.js
index 51f91c83..792f7c12 100644
--- a/test/demo/collections/main.js
+++ b/test/demo/collections/main.js
@@ -6,7 +6,7 @@
         init: function() {
             var self = this;
 
-            var testInitialOpen = false;
+            var testInitialOpen = true;
             var testOverlays = false;
             var testMargins = false;
             var testNavigator = true;
@@ -21,7 +21,7 @@
                 // referenceStripScroll: 'vertical',
                 navPrevNextWrap: false,
                 preserveViewport: false,
-                collectionMode: true,
+                // collectionMode: true,
                 // collectionRows: 3,
                 // collectionLayout: 'vertical',
                 // collectionTileSize: 10,