diff --git a/backend/src/app.service.ts b/backend/src/app.service.ts
index 927d7cc..3f1fc9e 100644
--- a/backend/src/app.service.ts
+++ b/backend/src/app.service.ts
@@ -1,7 +1,11 @@
 import { Injectable } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
 
 @Injectable()
 export class AppService {
+  constructor(
+    private readonly configService: ConfigService
+  ) {}
   getHello(): string {
     return 'Hello World!';
   }
diff --git a/backend/src/main.ts b/backend/src/main.ts
index db8e898..b875596 100644
--- a/backend/src/main.ts
+++ b/backend/src/main.ts
@@ -6,7 +6,7 @@ const corsOptions = {
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
-  app.enableCors();
+  app.enableCors(corsOptions);
   await app.listen(process.env.PORT ?? 3000);
 }