diff --git a/src/ol/interaction/MouseWheelZoom.js b/src/ol/interaction/MouseWheelZoom.js
index <HASH>..<HASH> 100644
--- a/src/ol/interaction/MouseWheelZoom.js
+++ b/src/ol/interaction/MouseWheelZoom.js
@@ -223,7 +223,8 @@ class MouseWheelZoom extends Interaction {
     }
 
     const view = map.getView();
-    if (this.mode_ === Mode.TRACKPAD && !(view.getConstrainResolution() || this.constrainResolution_)) {
+    if (this.mode_ === Mode.TRACKPAD &&
+        !(view.getConstrainResolution() || this.constrainResolution_)) {
       if (this.trackpadTimeoutId_) {
         clearTimeout(this.trackpadTimeoutId_);
       } else {
Update MouseWheelZoom.js