diff --git a/test_themes/static/src/systray_items/website_switcher.js b/test_themes/static/src/systray_items/website_switcher.js
index fd716cfef..b112dd28b 100644
--- a/test_themes/static/src/systray_items/website_switcher.js
+++ b/test_themes/static/src/systray_items/website_switcher.js
@@ -29,13 +29,13 @@ patch(WebsiteSwitcherSystray.prototype, {
 
     getElements() {
         // Add tooltip information
-        const elements = this._super();
+        const elements = super.getElements(...arguments);
         return elements.map((elem) => {
             elem.dataset = {
                 ...elem.dataset,
                 ...this.tooltips[elem.id]
             };
-            return elem
+            return elem;
         });
     },