diff --git a/src/main.ts b/src/main.ts
index 356335d..645691b 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -51,14 +51,14 @@ http
             logger.error(err);
 
             res.writeHead(400, contentType);
-            res.write(JSON.stringify({ response: "error", message: "Invalid content-type." }));
+            res.write(response.error(err));
             res.end();
           });
       } else {
         logger.log(`${sender} cannot ${req.method} to ${req.url}`);
 
         res.writeHead(400, contentType);
-        res.write(response.error(`Cannot ${req.method} to '${req.url}'`));
+        res.write(JSON.stringify({ error: { type: "generic", error: `Cannot ${req.method} to ${req.url}` }}));
         res.end();
       }
     });
diff --git a/src/utils/responder.ts b/src/utils/responder.ts
index b7f23c0..3b87715 100644
--- a/src/utils/responder.ts
+++ b/src/utils/responder.ts
@@ -1,17 +1,20 @@
+import { ValidationError } from "yup";
+
 export class Responder {
   constructor() {}
 
   public success(message: string): string {
     return JSON.stringify({
-      response: "success",
       message: message
     });
   }
 
-  public error(message: string): string {
+  public error(error: ValidationError): string {
     return JSON.stringify({
-      response: "error",
-      message: message
-    })
+      error: {
+        type: error.name,
+        message: error.message
+      }
+    });
   }
 }