diff --git a/server.js b/server.js
index 059afed..dcc163d 100644
--- a/server.js
+++ b/server.js
@@ -17,8 +17,8 @@ const PORT = process.env.PORT || 3000;
 const JWT_SECRET = process.env.JWT_SECRET || 'default_secret_key';
 const ADMIN_USERNAME = process.env.ADMIN_USERNAME || 'admin';
 const ADMIN_PASSWORD = process.env.ADMIN_PASSWORD || 'adminpassword';
-const publicVapidKey = process.env.publicVapidKey;
-const privateVapidKey = process.env.privateVapidKey;
+const publicVapidKey = process.env.PUBLIC_VAPID_KEY;
+const privateVapidKey = process.env.PRIVATE_VAPID_KEY;
 const app = express();
 app.use(cors());
 app.use(express.json());