diff --git a/src/ol/source/Tile.js b/src/ol/source/Tile.js
index 72e0758364..232b23c89f 100644
--- a/src/ol/source/Tile.js
+++ b/src/ol/source/Tile.js
@@ -317,7 +317,7 @@ TileSource.prototype.useTile = nullFunction;
  * @param {string} type Type.
  * @param {ol.Tile} tile The tile.
  */
-TileSource.Event = function(type, tile) {
+export const TileSourceEvent = function(type, tile) {
 
   Event.call(this, type);
 
@@ -329,5 +329,6 @@ TileSource.Event = function(type, tile) {
   this.tile = tile;
 
 };
-inherits(TileSource.Event, Event);
+inherits(TileSourceEvent, Event);
+
 export default TileSource;
diff --git a/src/ol/source/UrlTile.js b/src/ol/source/UrlTile.js
index 0f27e23a7a..e3cfd1312e 100644
--- a/src/ol/source/UrlTile.js
+++ b/src/ol/source/UrlTile.js
@@ -4,7 +4,7 @@
 import {getUid, inherits} from '../index.js';
 import TileState from '../TileState.js';
 import {expandUrl, createFromTemplates, nullTileUrlFunction} from '../tileurlfunction.js';
-import TileSource from '../source/Tile.js';
+import TileSource, {TileSourceEvent} from '../source/Tile.js';
 import TileEventType from '../source/TileEventType.js';
 import {getKeyZXY} from '../tilecoord.js';
 
@@ -130,7 +130,7 @@ UrlTile.prototype.handleTileChange = function(event) {
         TileEventType.TILELOADEND : undefined;
   }
   if (type != undefined) {
-    this.dispatchEvent(new TileSource.Event(type, tile));
+    this.dispatchEvent(new TileSourceEvent(type, tile));
   }
 };