diff --git a/src/ol/pointer/touchsource.js b/src/ol/pointer/touchsource.js
index fc87a13136..5960069a51 100644
--- a/src/ol/pointer/touchsource.js
+++ b/src/ol/pointer/touchsource.js
@@ -31,7 +31,6 @@
 goog.provide('ol.pointer.TouchSource');
 
 goog.require('goog.array');
-goog.require('goog.asserts');
 goog.require('goog.math.Coordinate');
 goog.require('goog.object');
 goog.require('ol.pointer.EventSource');