diff --git a/addons/web_unsplash/static/src/js/unsplash_beacon.js b/addons/web_unsplash/static/src/js/unsplash_beacon.js
index 53600aacb48..79de88ea9d1 100644
--- a/addons/web_unsplash/static/src/js/unsplash_beacon.js
+++ b/addons/web_unsplash/static/src/js/unsplash_beacon.js
@@ -10,7 +10,7 @@ publicWidget.registry.UnsplashBeacon = publicWidget.Widget.extend({
      * @override
      */
     start: function () {
-        var unsplashImages = this.$('img[src*="/unsplash/"]').map((img) => {
+        var unsplashImages = Array.from(this.$('img[src*="/unsplash/"]')).map((img) => {
             // get image id from URL (`http://www.domain.com:1234/unsplash/xYdf5feoI/lion.jpg` -> `xYdf5feoI`)
             return img.src.split('/unsplash/')[1].split('/')[0];
         });
diff --git a/addons/website/static/src/js/utils.js b/addons/website/static/src/js/utils.js
index 778c38d83c3..6b4dfd84f62 100644
--- a/addons/website/static/src/js/utils.js
+++ b/addons/website/static/src/js/utils.js
@@ -123,7 +123,7 @@ function autocompleteWithPages(self, $input, options) {
  * @param {jQuery} [$excluded]
  */
 function onceAllImagesLoaded($element, $excluded) {
-    var defs = $element.find('img').addBack('img').map(img => {
+    var defs = Array.from($element.find("img").addBack("img")).map((img) => {
         if (img.complete || $excluded && ($excluded.is(img) || $excluded.has(img).length)) {
             return; // Already loaded
         }
diff --git a/addons/website/static/src/snippets/s_image_gallery/options.js b/addons/website/static/src/snippets/s_image_gallery/options.js
index 71243d3a0ea..db5cd4bca50 100644
--- a/addons/website/static/src/snippets/s_image_gallery/options.js
+++ b/addons/website/static/src/snippets/s_image_gallery/options.js
@@ -278,7 +278,7 @@ options.registry.gallery = options.Class.extend({
      */
     slideshow: function () {
         const imageEls = this._getImages();
-        const images = imageEls.map((img) => ({
+        const images = Array.from(imageEls).map((img) => ({
             // Use getAttribute to get the attribute value otherwise .src
             // returns the absolute url.
             src: img.getAttribute('src'),
diff --git a/addons/website_forum/static/src/js/website_forum.js b/addons/website_forum/static/src/js/website_forum.js
index 25922139e89..afbe847d123 100644
--- a/addons/website_forum/static/src/js/website_forum.js
+++ b/addons/website_forum/static/src/js/website_forum.js
@@ -614,7 +614,7 @@ publicWidget.registry.websiteForumSpam = publicWidget.Widget.extend({
     _onMarkSpamClick: function (ev) {
         var key = this.$('.modal .tab-pane.active').data('key');
         var $inputs = this.$('.modal .tab-pane.active input.form-check-input:checked');
-        var values = $inputs.map((o) => parseInt(o.value));
+        var values = Array.from($inputs).map((o) => parseInt(o.value));
         return this._rpc({model: 'forum.post',
             method: 'mark_as_offensive_batch',
             args: [this.spamIDs, key, values],