diff --git a/src/ol/source/tile.js b/src/ol/source/tile.js
index 5567d6162b..3873841270 100644
--- a/src/ol/source/tile.js
+++ b/src/ol/source/tile.js
@@ -334,32 +334,3 @@ ol.source.Tile.Event = function(type, tile) {
 
 };
 ol.inherits(ol.source.Tile.Event, ol.events.Event);
-
-
-/**
- * @enum {string}
- */
-ol.source.Tile.EventType = {
-
-  /**
-   * Triggered when a tile starts loading.
-   * @event ol.source.Tile.Event#tileloadstart
-   * @api stable
-   */
-  TILELOADSTART: 'tileloadstart',
-
-  /**
-   * Triggered when a tile finishes loading.
-   * @event ol.source.Tile.Event#tileloadend
-   * @api stable
-   */
-  TILELOADEND: 'tileloadend',
-
-  /**
-   * Triggered if tile loading results in an error.
-   * @event ol.source.Tile.Event#tileloaderror
-   * @api stable
-   */
-  TILELOADERROR: 'tileloaderror'
-
-};
diff --git a/src/ol/source/tileeventtype.js b/src/ol/source/tileeventtype.js
new file mode 100644
index 0000000000..c7e7bd99a9
--- /dev/null
+++ b/src/ol/source/tileeventtype.js
@@ -0,0 +1,29 @@
+goog.provide('ol.source.TileEventType');
+
+/**
+ * @enum {string}
+ */
+ol.source.TileEventType = {
+
+  /**
+   * Triggered when a tile starts loading.
+   * @event ol.source.Tile.Event#tileloadstart
+   * @api stable
+   */
+  TILELOADSTART: 'tileloadstart',
+
+  /**
+   * Triggered when a tile finishes loading.
+   * @event ol.source.Tile.Event#tileloadend
+   * @api stable
+   */
+  TILELOADEND: 'tileloadend',
+
+  /**
+   * Triggered if tile loading results in an error.
+   * @event ol.source.Tile.Event#tileloaderror
+   * @api stable
+   */
+  TILELOADERROR: 'tileloaderror'
+
+};
diff --git a/src/ol/source/urltile.js b/src/ol/source/urltile.js
index d364d676fe..56768d6868 100644
--- a/src/ol/source/urltile.js
+++ b/src/ol/source/urltile.js
@@ -4,6 +4,7 @@ goog.require('ol');
 goog.require('ol.TileState');
 goog.require('ol.TileUrlFunction');
 goog.require('ol.source.Tile');
+goog.require('ol.source.TileEventType');
 
 
 /**
@@ -111,15 +112,15 @@ ol.source.UrlTile.prototype.handleTileChange = function(event) {
   switch (tile.getState()) {
     case ol.TileState.LOADING:
       this.dispatchEvent(
-          new ol.source.Tile.Event(ol.source.Tile.EventType.TILELOADSTART, tile));
+          new ol.source.Tile.Event(ol.source.TileEventType.TILELOADSTART, tile));
       break;
     case ol.TileState.LOADED:
       this.dispatchEvent(
-          new ol.source.Tile.Event(ol.source.Tile.EventType.TILELOADEND, tile));
+          new ol.source.Tile.Event(ol.source.TileEventType.TILELOADEND, tile));
       break;
     case ol.TileState.ERROR:
       this.dispatchEvent(
-          new ol.source.Tile.Event(ol.source.Tile.EventType.TILELOADERROR, tile));
+          new ol.source.Tile.Event(ol.source.TileEventType.TILELOADERROR, tile));
       break;
     default:
       // pass