diff --git a/test/spec/ol/renderer/webgl/imagelayer.test.js b/test/spec/ol/renderer/webgl/imagelayer.test.js
index f31d68da85..be38871e5f 100644
--- a/test/spec/ol/renderer/webgl/imagelayer.test.js
+++ b/test/spec/ol/renderer/webgl/imagelayer.test.js
@@ -9,6 +9,7 @@ describe('ol.renderer.webgl.ImageLayer', function() {
     var viewExtent;
     var viewResolution;
     var viewRotation;
+    var viewCenter;
     var imageExtent;
 
     beforeEach(function() {