diff --git a/lib/Controller/PageController.php b/lib/Controller/PageController.php
index 86150c7..480968a 100644
--- a/lib/Controller/PageController.php
+++ b/lib/Controller/PageController.php
@@ -36,6 +36,10 @@ class PageController extends Controller
 		$csp->allowEvalScript(true);
 
 		$response = new TemplateResponse(Application::APP_ID, 'index');
+		$response->setHeaders([
+			'Cross-Origin-Opener-Policy' => 'same-origin',
+			'Cross-Origin-Embedder-Policy' => 'require-corp',
+		]);
 		$response->setContentSecurityPolicy($csp);
 
 		return $response;
diff --git a/src/main.ts b/src/main.ts
index df9496c..c805105 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -13,7 +13,6 @@ import ar from '@emulatorjs/emulatorjs/data/localization/ar-AR.json'
 import ben from '@emulatorjs/emulatorjs/data/localization/ben-BEN.json'
 import de from '@emulatorjs/emulatorjs/data/localization/de-GER.json'
 import el from '@emulatorjs/emulatorjs/data/localization/el-GR.json'
-import en from '@emulatorjs/emulatorjs/data/localization/en.json'
 import es from '@emulatorjs/emulatorjs/data/localization/es-ES.json'
 import fa from '@emulatorjs/emulatorjs/data/localization/fa-AF.json'
 import { getRequestToken } from '@nextcloud/auth'
@@ -98,7 +97,6 @@ type Config = {
 		| 'ben'
 		| 'de'
 		| 'el'
-		| 'en'
 		| 'es'
 		| 'fa'
 		| 'hi'
@@ -185,9 +183,6 @@ switch (document.documentElement.lang) {
 		config.language = 'zh'
 		config.langJson = zh
 		break
-	default:
-		config.language = 'en'
-		config.langJson = en
 }
 
 interface EmulatorJS {
@@ -316,7 +311,6 @@ if (system) {
 }
 
 config.dataPath = 'https://cdn.emulatorjs.org/stable/data/'
-config.startOnLoad = true
 config.threads = !!window.SharedArrayBuffer
 
 // eslint-disable-next-line no-new