diff --git a/backend/src/server.ts b/backend/src/server.ts
index ce0b2ea..93a6d58 100644
--- a/backend/src/server.ts
+++ b/backend/src/server.ts
@@ -18,7 +18,7 @@ import { config } from './lib/config.js';
 import { jwtVerify } from 'jose';
 import type { JwtPayload } from './lib/request-context.js';
 
-const jwtSecret = new TextEncoder().encode(process.env.JWT_SECRET || '');
+const jwtSecret = new TextEncoder().encode(config.JWT_SECRET);
 
 await initCosmosIfNeeded();