diff --git a/examples/xyz-esri-4326-512.js b/examples/xyz-esri-4326-512.js
index 64f865633f..0b84f053ad 100644
--- a/examples/xyz-esri-4326-512.js
+++ b/examples/xyz-esri-4326-512.js
@@ -35,8 +35,7 @@ var map = new ol.Map({
   target: 'map',
   layers: [
     new ol.layer.Tile({
-      extent: projectionExtent,
-      /* ol.source.XYZ and ol.tilegrid.XYZ have nu resolutions config */
+      /* ol.source.XYZ and ol.tilegrid.XYZ have no resolutions config */
       source: new ol.source.TileImage({
         attributions: [attribution],
         tileUrlFunction: function(tileCoord, pixelRatio, projection) {