diff --git a/src/ol/tilestore.js b/src/ol/tilestore.js
index c1d2626ca3..a74a19a100 100644
--- a/src/ol/tilestore.js
+++ b/src/ol/tilestore.js
@@ -102,7 +102,12 @@ ol.TileStore.prototype.getTile = function(tileCoord) {
     return this.tileCache_[key];
   } else {
     var tileUrl = this.getTileCoordUrl(tileCoord);
-    var tile = new ol.Tile(tileCoord, tileUrl, this.crossOrigin_);
+    var tile;
+    if (goog.isDef(tileUrl)) {
+      tile = new ol.Tile(tileCoord, tileUrl, this.crossOrigin_);
+    } else {
+      tile = null;
+    }
     this.tileCache_[key] = tile;
     return tile;
   }
diff --git a/src/ol/webgl/tilelayerrenderer.js b/src/ol/webgl/tilelayerrenderer.js
index b8ab95c3db..f4745c1abf 100644
--- a/src/ol/webgl/tilelayerrenderer.js
+++ b/src/ol/webgl/tilelayerrenderer.js
@@ -210,7 +210,8 @@ ol.webgl.TileLayerRenderer.prototype.redraw = function() {
 
   tileBounds.forEachTileCoord(z, function(tileCoord) {
     var tile = tileStore.getTile(tileCoord);
-    if (tile.isLoaded()) {
+    if (goog.isNull(tile)) {
+    } else if (tile.isLoaded()) {
       var x = tileSize.width * (tileCoord.x - tileBounds.minX);
       var y = tileSize.height * (tileCoord.y - tileBounds.minY);
       gl.texSubImage2D(goog.webgl.TEXTURE_2D, 0,