diff --git a/packages/rocketchat-lazy-load/client/index.js b/packages/rocketchat-lazy-load/client/index.js
index 884a7e46b5bd..0abdd090d39d 100644
--- a/packages/rocketchat-lazy-load/client/index.js
+++ b/packages/rocketchat-lazy-load/client/index.js
@@ -58,7 +58,8 @@ const isVisible = (el, instance) => {
 window.addEventListener('resize', window.lazyloadtick);
 
 export const lazyloadtick = _.debounce(() => {
-	[...document.querySelectorAll('.lazy-img[data-src]')].forEach((el) =>
+	const lazyImg = document.querySelectorAll('.lazy-img[data-src]');
+	Array.from(lazyImg).forEach((el) =>
 		isVisible(el, Blaze.getView(el)._templateInstance)
 	);
 }, 300);
diff --git a/packages/rocketchat-lib/client/lib/roomExit.js b/packages/rocketchat-lib/client/lib/roomExit.js
index df61dc33d58a..c6daea088cd4 100644
--- a/packages/rocketchat-lib/client/lib/roomExit.js
+++ b/packages/rocketchat-lib/client/lib/roomExit.js
@@ -23,7 +23,7 @@ this.roomExit = function() {
 	if (mainNode == null) {
 		return;
 	}
-	return [...mainNode.children].forEach((child) => {
+	return Array.from(mainNode.children).forEach((child) => {
 		if (child == null) {
 			return;
 		}
diff --git a/packages/rocketchat-ui/client/lib/sideNav.js b/packages/rocketchat-ui/client/lib/sideNav.js
index cda0d349974c..a7193113f37c 100644
--- a/packages/rocketchat-ui/client/lib/sideNav.js
+++ b/packages/rocketchat-ui/client/lib/sideNav.js
@@ -73,7 +73,7 @@ SideNav = new class { //eslint-disable-line
 		}
 	}
 	focusInput() {
-		const sideNavDivs = [...this.sideNav[0].children].filter((el) => el.tagName === 'DIV' && !el.classList.contains('hidden'));
+		const sideNavDivs = Array.from(this.sideNav[0].children).filter((el) => el.tagName === 'DIV' && !el.classList.contains('hidden'));
 		let highestZidx = 0;
 		let highestZidxElem;
 		sideNavDivs.forEach((el) => {