diff --git a/test_themes/static/src/systray_items/website_switcher.js b/test_themes/static/src/systray_items/website_switcher.js
index f9c4c722e..594eaa780 100644
--- a/test_themes/static/src/systray_items/website_switcher.js
+++ b/test_themes/static/src/systray_items/website_switcher.js
@@ -12,6 +12,8 @@ patch(WebsiteSwitcherSystray.prototype, 'test_themes_website_switcher_systray',
 
         this.orm = useService('orm');
         this.tooltips = useState({});
+        // Disable the notification service to avoid having a notification for each theme.
+        this.notificationService = { add: () => () => null };
 
         onMounted(async () => {
             const themesWebsites = await this.orm.call('website', 'get_test_themes_websites_theme_preview');
diff --git a/test_themes/static/src/systray_items/website_switcher.xml b/test_themes/static/src/systray_items/website_switcher.xml
index 24893155b..a115af7cd 100644
--- a/test_themes/static/src/systray_items/website_switcher.xml
+++ b/test_themes/static/src/systray_items/website_switcher.xml
@@ -8,5 +8,8 @@
     <xpath expr="//DropdownItem" position="attributes">
         <attribute name="dataset">this.tooltips[element.id]</attribute>
     </xpath>
+    <!-- With this module installed, disable the warning -->
+    <xpath expr="//DropdownItem/t[@t-if='!element.domain']" position="replace">
+    </xpath>
 </t>
 </templates>