diff --git a/src/ol/tile.js b/src/ol/tile.js
index 598651f9fc..6967f3e5a4 100644
--- a/src/ol/tile.js
+++ b/src/ol/tile.js
@@ -1,5 +1,6 @@
 goog.provide('ol.Tile');
 
+goog.require('goog.array');
 goog.require('goog.events');
 goog.require('goog.events.EventTarget');
 goog.require('goog.events.EventType');