diff --git a/server/.env.sample b/server/.env.sample
index 6e54204..67c5cde 100644
--- a/server/.env.sample
+++ b/server/.env.sample
@@ -1,5 +1,5 @@
 DATABASE_URL=postgresql://postgres:password@localhost:5432/itsuhima_dev
 CORS_ALLOW_ORIGINS=http://localhost:5173
 DOMAIN=localhost
-NODE_ENV=dev # dev or prod
+NODE_ENV=dev # dev or production
 COOKIE_SECRET=your-random-secret-key-for-development
diff --git a/server/src/main.ts b/server/src/main.ts
index 4142500..69f937f 100644
--- a/server/src/main.ts
+++ b/server/src/main.ts
@@ -52,7 +52,7 @@ serve(
   },
 );
 
-const isProduction = process.env.NODE_ENV === "prod";
+const isProduction = process.env.NODE_ENV === "production";
 
 export const cookieOptions = {
   path: "/",