diff --git a/backend/src/routes.ts b/backend/src/routes.ts
index 390d11ddd..fe6a82a8a 100644
--- a/backend/src/routes.ts
+++ b/backend/src/routes.ts
@@ -656,15 +656,15 @@ class Routes {
   }
 
   public async getAdressTxChain(req: Request, res: Response) {
-    res.status(404).send('Not implemented');
+    res.status(501).send('Not implemented');
   }
 
   public async getAddressPrefix(req: Request, res: Response) {
-    res.json([]);
+    res.status(501).send('Not implemented');
   }
 
   public getTransactionOutspends(req: Request, res: Response) {
-    res.json([]);
+    res.status(501).send('Not implemented');
   }
 }