diff --git a/src/ol/interaction/MouseWheelZoom.js b/src/ol/interaction/MouseWheelZoom.js
index 443dc004e9..7546e6e399 100644
--- a/src/ol/interaction/MouseWheelZoom.js
+++ b/src/ol/interaction/MouseWheelZoom.js
@@ -4,8 +4,7 @@
 import {always, focus} from '../events/condition.js';
 import EventType from '../events/EventType.js';
 import {DEVICE_PIXEL_RATIO, FIREFOX} from '../has.js';
-import Interaction, {zoomByDelta} from './Interaction.js';
-import {clamp} from '../math.js';
+import Interaction from './Interaction.js';
 
 
 /**
diff --git a/test/spec/ol/interaction/mousewheelzoom.test.js b/test/spec/ol/interaction/mousewheelzoom.test.js
index ee1858bf5d..ee9b7fd87a 100644
--- a/test/spec/ol/interaction/mousewheelzoom.test.js
+++ b/test/spec/ol/interaction/mousewheelzoom.test.js
@@ -2,8 +2,8 @@ import Map from '../../../../src/ol/Map.js';
 import MapBrowserEvent from '../../../../src/ol/MapBrowserEvent.js';
 import View from '../../../../src/ol/View.js';
 import Event from '../../../../src/ol/events/Event.js';
-import {DEVICE_PIXEL_RATIO, FIREFOX} from '../../../../src/ol/has.js';
-import MouseWheelZoom, {Mode} from '../../../../src/ol/interaction/MouseWheelZoom.js';
+import {DEVICE_PIXEL_RATIO, FIREFOX, SAFARI} from '../../../../src/ol/has.js';
+import MouseWheelZoom from '../../../../src/ol/interaction/MouseWheelZoom.js';
 
 
 describe('ol.interaction.MouseWheelZoom', function() {
@@ -66,7 +66,7 @@ describe('ol.interaction.MouseWheelZoom', function() {
     if (FIREFOX) {
       it('works on Firefox in DOM_DELTA_PIXEL mode (trackpad)', function(done) {
         map.once('postrender', function() {
-          expect(interaction.mode_).to.be(Mode.TRACKPAD);
+          expect(interaction.lastDelta_).to.be(1);
           done();
         });
         const event = new MapBrowserEvent('wheel', map, {
@@ -84,7 +84,7 @@ describe('ol.interaction.MouseWheelZoom', function() {
     if (!FIREFOX) {
       it('works in DOM_DELTA_PIXEL mode (trackpad)', function(done) {
         map.once('postrender', function() {
-          expect(interaction.mode_).to.be(Mode.TRACKPAD);
+          expect(interaction.lastDelta_).to.be(1);
           done();
         });
         const event = new MapBrowserEvent('wheel', map, {