diff --git a/src/app.js b/src/app.js
index 4fc93f3c3d..c3c5694e1a 100644
--- a/src/app.js
+++ b/src/app.js
@@ -488,7 +488,7 @@ Please make a backup of your contracts and start using http://remix.ethereum.org
   // The event listener needs to be registered as early as possible, because the
   // parent will send the message upon the "load" event.
   let filesToLoad = null
-  const loadFilesCallback = function (files) { filesToLoad = files } // will be replaced later
+  let loadFilesCallback = function (files) { filesToLoad = files } // will be replaced later
 
   window.addEventListener('message', function (ev) {
     if (typeof ev.data === typeof [] && ev.data[0] === 'loadFiles') {
diff --git a/src/app/files/browser-files-tree.js b/src/app/files/browser-files-tree.js
index 12e7f1cbc3..34df82b5db 100644
--- a/src/app/files/browser-files-tree.js
+++ b/src/app/files/browser-files-tree.js
@@ -4,13 +4,13 @@ var EventManager = require('../../lib/events')
 
 import { BaseApi } from 'remix-plugin'
 
- class FilesTree extends BaseApi {
-
+class FilesTree extends BaseApi {
   constructor (name, storage) {
     super({
       name: name,
       methods: ['get', 'set', 'remove'],
-      description: 'service - read/write file to the `config` explorer without need of additionnal permission.'
+      description:
+        'service - read/write file to the `config` explorer without need of additionnal permission.'
     })
     this.event = new EventManager()
     this.storage = storage
@@ -109,7 +109,11 @@ import { BaseApi } from 'remix-plugin'
       if (!this.storage.rename(unprefixedoldPath, unprefixednewPath)) {
         return false
       }
-      this.event.trigger('fileRenamed', [this.type + '/' + unprefixedoldPath, this.type + '/' + unprefixednewPath, isFolder])
+      this.event.trigger('fileRenamed', [
+        this.type + '/' + unprefixedoldPath,
+        this.type + '/' + unprefixednewPath,
+        isFolder
+      ])
       return true
     }
     return false
@@ -117,7 +121,7 @@ import { BaseApi } from 'remix-plugin'
 
   resolveDirectory (path, callback) {
     if (path[0] === '/') path = path.substring(1)
-    if (!path) return callback(null, { [this.type]: { } })
+    if (!path) return callback(null, { [this.type]: {} })
     var tree = {}
     path = this.removePrefix(path)
 
@@ -138,7 +142,6 @@ import { BaseApi } from 'remix-plugin'
     if (path[0] === '/') return path.substring(1)
     return path
   }
-
 }
 
 module.exports = FilesTree
diff --git a/src/universal-dapp.js b/src/universal-dapp.js
index 0cbd80a604..ca8ab12a5b 100644
--- a/src/universal-dapp.js
+++ b/src/universal-dapp.js
@@ -8,18 +8,15 @@ var txHelper = remixLib.execution.txHelper
 var EventManager = remixLib.EventManager
 var executionContext = remixLib.execution.executionContext
 import { UdappApi } from 'remix-plugin'
-import { EventEmitter } from 'events';
+import { EventEmitter } from 'events'
 
 const profile = {
   name: 'udapp',
   displayName: 'universal dapp',
-  events: ['newTransaction'],
-  methods: ['sendTransaction', 'getAccounts', 'createVMAccount'],
   description: 'service - run transaction and access account',
   permission: true
 }
 
-
 module.exports = class UniversalDApp extends UdappApi {
 
   constructor (registry) {