diff --git a/src/server/templates/admin.js b/src/server/templates/admin.js
index b835ad6..99c78be 100644
--- a/src/server/templates/admin.js
+++ b/src/server/templates/admin.js
@@ -1,4 +1,5 @@
 /* ADMIN_JS_MARKER */
+(() => {
 const ADMIN_URL = window.ADMIN_URL;
 const ADMIN_PDF_URL = window.ADMIN_PDF_URL;
 const MEALS = window.MEALS;
@@ -412,3 +413,4 @@ function adminInit() {
 }
 
 adminInit();
+})();
diff --git a/tests/test_generate_form.py b/tests/test_generate_form.py
index 7930998..29c3c1c 100644
--- a/tests/test_generate_form.py
+++ b/tests/test_generate_form.py
@@ -239,6 +239,9 @@ class TestGenerateFormPlaywright:
             yield page
             browser.close()
 
+    def test_admin_bundle_loads(self, browser_page):
+        assert browser_page.evaluate("typeof window.loadWeekOrders") == "function"
+
     def test_qty_plus_updates_total_without_list_teardown(self, browser_page):
         page = browser_page
         card = page.locator('[data-meal-index="0"]')