diff --git a/test/spec/ol/control/scaleline.test.js b/test/spec/ol/control/scaleline.test.js
index 33fb7e5ce9..f8396f2eb9 100644
--- a/test/spec/ol/control/scaleline.test.js
+++ b/test/spec/ol/control/scaleline.test.js
@@ -300,7 +300,7 @@ describe('ol.control.ScaleLine', function() {
     });
 
     it('Metric display works with Geographic (EPSG:4326) projection', function() {
-      var ctrl = new ScaleLine();
+      const ctrl = new ScaleLine();
       ctrl.setMap(map);
       map.setView(new View({
         center: [0, 0],