diff --git a/routes/_app.tsx b/routes/_app.tsx
index 4be532a..97f7754 100644
--- a/routes/_app.tsx
+++ b/routes/_app.tsx
@@ -5,7 +5,7 @@ export default function App({ Component }: AppProps) {
   return (
     <html lang="en">
       <head>
-        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+        <meta charset="utf-8" />
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
         <meta property="og:title" content="Kuru Kuru~" />
         <meta property="og:site_name" content="Kuru Kuru~" />
diff --git a/routes/index.tsx b/routes/index.tsx
index d8d8fc4..d2eafdb 100644
--- a/routes/index.tsx
+++ b/routes/index.tsx
@@ -55,7 +55,7 @@ export const handler: Handlers = {
       });
       return new Response(body, {
         headers: {
-          "Content-Type": "text/event-stream",
+          "Content-Type": "text/event-stream; charset=utf-8",
         },
       });
     }
