diff --git a/src/ol/base/pixelbounds.js b/src/ol/base/pixelbounds.js
index 52eb9f0eff..42a63f3b91 100644
--- a/src/ol/base/pixelbounds.js
+++ b/src/ol/base/pixelbounds.js
@@ -1,6 +1,5 @@
 goog.provide('ol.PixelBounds');
 
-goog.require('goog.asserts');
 goog.require('ol.Rectangle');