diff --git a/projects/angular-tree-component/src/lib/components/tree-viewport.component.ts b/projects/angular-tree-component/src/lib/components/tree-viewport.component.ts
index add331f1..a5b2b43a 100644
--- a/projects/angular-tree-component/src/lib/components/tree-viewport.component.ts
+++ b/projects/angular-tree-component/src/lib/components/tree-viewport.component.ts
@@ -5,7 +5,6 @@ import {
   AfterViewInit,
   OnInit,
   OnDestroy,
-  NgZone
 } from '@angular/core';
 import { TreeVirtualScroll } from '../models/tree-virtual-scroll.model';
 import { TREE_EVENTS } from '../constants/events';
@@ -31,7 +30,6 @@ export class TreeViewportComponent implements AfterViewInit, OnInit, OnDestroy {
 
   constructor(
     private elementRef: ElementRef,
-    private ngZone: NgZone,
     public virtualScroll: TreeVirtualScroll
   ) {
     this.scrollEventHandler = this.setViewport.bind(this);
@@ -47,9 +45,7 @@ export class TreeViewportComponent implements AfterViewInit, OnInit, OnDestroy {
       this.virtualScroll.fireEvent({ eventName: TREE_EVENTS.initialized });
     });
     let el: HTMLElement = this.elementRef.nativeElement;
-    this.ngZone.runOutsideAngular(() => {
-      el.addEventListener('scroll', this.scrollEventHandler);
-    });
+    el.addEventListener('scroll', this.scrollEventHandler);
   }
 
   ngOnDestroy() {