diff --git a/routes/inbox.js b/routes/inbox.js
index 005e422..30638e7 100644
--- a/routes/inbox.js
+++ b/routes/inbox.js
@@ -1,11 +1,13 @@
 'use strict';
 
 var db = require('../lib/db');
+// eslint-disable-next-line no-unused-vars
+var _express = require('express');
 var jsonld = require('jsonld');
 
 module.exports = {
     /**
-     * @param {express.IRoute} routeObj
+     * @param {_express.IRoute} routeObj
      */
     route: (routeObj) => {
         routeObj.post(async (req, res, _next) => {
@@ -14,6 +16,11 @@ module.exports = {
                 if ( bodyParsed.type === 'Create') {
                     var to;
                     var cc;
+                    if ( typeof bodyParsed.object === 'string' ) {
+                        res.status(422);
+                        res.body('Unimplemented');
+                        return res.end();
+                    }
                     if ( typeof bodyParsed.object.to === 'string' ) {
                         to = [bodyParsed.object.to];
                     } else {
@@ -35,7 +42,11 @@ module.exports = {
                         )
                     });
                     res.status(204);
-                    res.end();
+                    return res.end();
+                } else {
+                    res.status(422);
+                    res.body('Unimplemented');
+                    return res.end();
                 }
             }
         });