diff --git a/packages/frontend/src/index.html b/packages/frontend/src/index.html
index b93e32265e..49189914a0 100644
--- a/packages/frontend/src/index.html
+++ b/packages/frontend/src/index.html
@@ -17,12 +17,14 @@
 	<meta
 		http-equiv="Content-Security-Policy"
 		content="default-src 'self';
-		  script-src 'self';
-		  style-src 'self' 'unsafe-inline';
-		  img-src 'self' data: www.google.com xn--931a.moe localhost:3000 localhost:5173 127.0.0.1:5173 127.0.0.1:3000;
+			worker-src 'self';
+			script-src 'self';
+			style-src 'self' 'unsafe-inline';
+			img-src 'self' data: www.google.com xn--931a.moe localhost:3000 localhost:5173 127.0.0.1:5173 127.0.0.1:3000;
 			media-src 'self' localhost:3000 localhost:5173 127.0.0.1:5173 127.0.0.1:3000;"
 	/>
 	<meta property="og:site_name" content="[DEV BUILD] Misskey" />
+	<meta name="viewport" content="width=device-width, initial-scale=1">
 </head>
 
 <body>
