diff --git a/src/app.js b/src/app.js
index 6c7016b15c..ac78eb3ac0 100644
--- a/src/app.js
+++ b/src/app.js
@@ -4,7 +4,6 @@
 var $ = require('jquery')
 var base64 = require('js-base64').Base64
 
-var utils = require('./app/utils')
 var QueryParams = require('./app/query-params')
 var queryParams = new QueryParams()
 var GistHandler = require('./app/gist-handler')
@@ -45,11 +44,10 @@ var run = function () {
 
   function loadFiles (files) {
     for (var f in files) {
-      var key = utils.fileKey(f)
-      var content = files[f].content
-      storage.loadFile(key, content)
+      storage.loadFile(f, files[f].content)
     }
-    editor.setCacheFile(utils.fileKey(Object.keys(files)[0]))
+    // Set the first file as current tab
+    editor.setCacheFile(Object.keys(files)[0])
     updateFiles()
   }
 
@@ -100,7 +98,7 @@ var run = function () {
     function check (key) {
       chrome.storage.sync.get(key, function (resp) {
         console.log('comparing to cloud', key, resp)
-        if (typeof resp[key] !== 'undefined' && obj[key] !== resp[key] && confirm('Overwrite "' + utils.fileNameFromKey(key) + '"? Click Ok to overwrite local file with file from cloud. Cancel will push your local file to the cloud.')) {
+        if (typeof resp[key] !== 'undefined' && obj[key] !== resp[key] && confirm('Overwrite "' + key + '"? Click Ok to overwrite local file with file from cloud. Cancel will push your local file to the cloud.')) {
           console.log('Overwriting', key)
           storage.set(key, resp[key])
           updateFiles()
@@ -120,9 +118,6 @@ var run = function () {
     for (var y in storage.keys()) {
       console.log('checking', y)
       obj[y] = storage.get(y)
-      if (!utils.isCachedFile(y)) {
-        continue
-      }
       count++
       check(y)
     }
@@ -246,9 +241,9 @@ var run = function () {
           editor.hasFile(newName)
             ? 'Are you sure you want to overwrite: ' + newName + ' with ' + originalName + '?'
             : 'Are you sure you want to rename: ' + originalName + ' to ' + newName + '?')) {
-        storage.rename(utils.fileKey(originalName), utils.fileKey(newName))
-        editor.renameSession(utils.fileKey(originalName), utils.fileKey(newName))
-        editor.setCacheFile(utils.fileKey(newName))
+        storage.rename(originalName, newName)
+        editor.renameSession(originalName, newName)
+        editor.setCacheFile(newName)
       }
 
       updateFiles()
@@ -263,16 +258,16 @@ var run = function () {
     var name = $(this).parent().find('.name').text()
 
     if (confirm('Are you sure you want to remove: ' + name + ' from local storage?')) {
-      storage.remove(utils.fileKey(name))
-      editor.removeSession(utils.fileKey(name))
-      editor.setNextFile(utils.fileKey(name))
+      storage.remove(name)
+      editor.removeSession(name)
+      editor.setNextFile(name)
       updateFiles()
     }
     return false
   })
 
   function swicthToFile (file) {
-    editor.setCacheFile(utils.fileKey(file))
+    editor.setCacheFile(file)
     updateFiles()
   }
 
@@ -290,12 +285,12 @@ var run = function () {
     $('#output').empty()
 
     for (var f in files) {
-      var name = utils.fileNameFromKey(files[f])
+      var name = files[f]
       $filesEl.append($('<li class="file"><span class="name">' + name + '</span><span class="remove"><i class="fa fa-close"></i></span></li>'))
     }
 
     if (editor.cacheFileIsPresent()) {
-      var currentFileName = utils.fileNameFromKey(editor.getCacheFile())
+      var currentFileName = editor.getCacheFile()
       var active = $('#files .file').filter(function () { return $(this).find('.name').text() === currentFileName })
       active.addClass('active')
       editor.resetSession()
@@ -522,7 +517,7 @@ var run = function () {
 
   function runCompiler () {
     var files = {}
-    var target = utils.fileNameFromKey(editor.getCacheFile())
+    var target = editor.getCacheFile()
 
     files[target] = editor.getValue()
 
diff --git a/src/app/config.js b/src/app/config.js
index c71f1716b5..69f5e4aa71 100644
--- a/src/app/config.js
+++ b/src/app/config.js
@@ -1,8 +1,6 @@
 'use strict'
 
-var utils = require('./utils')
-
-var CONFIG_FILE = utils.fileKey('.browser-solidity.json')
+var CONFIG_FILE = '.browser-solidity.json'
 
 function Config (storage) {
   this.items = {}
diff --git a/src/app/debugger.js b/src/app/debugger.js
index a03bb1df29..6a604b9e9b 100644
--- a/src/app/debugger.js
+++ b/src/app/debugger.js
@@ -1,7 +1,6 @@
 'use strict'
 
 var remix = require('ethereum-remix')
-var utils = require('./utils')
 var ace = require('brace')
 var Range = ace.acequire('ace/range').Range
 
@@ -70,7 +69,7 @@ Debugger.prototype.debug = function (txHash) {
  * @param {Object} rawLocation - raw position of the source code to hightlight {start, length, file, jump}
  */
 Debugger.prototype.highlight = function (lineColumnPos, rawLocation) {
-  var name = utils.fileNameFromKey(this.editor.getCacheFile()) // current opened tab
+  var name = this.editor.getCacheFile() // current opened tab
   var source = this.compiler.lastCompilationResult.data.sourceList[rawLocation.file] // auto switch to that tab
   this.removeCurrentMarker()
   if (name !== source) {
diff --git a/src/app/editor.js b/src/app/editor.js
index 5a54bc115b..bc51642b0a 100644
--- a/src/app/editor.js
+++ b/src/app/editor.js
@@ -1,14 +1,13 @@
 /* global FileReader */
 'use strict'
 
-var utils = require('./utils')
 var examples = require('./example-contracts')
 
 var ace = require('brace')
 require('../mode-solidity.js')
 
 function Editor (loadingFromGist, storage) {
-  var SOL_CACHE_UNTITLED = utils.fileKey('Untitled')
+  var SOL_CACHE_UNTITLED = 'Untitled'
   var SOL_CACHE_FILE = null
 
   var editor = ace.edit('input')
@@ -37,7 +36,7 @@ function Editor (loadingFromGist, storage) {
 
   this.uploadFile = function (file, callback) {
     var fileReader = new FileReader()
-    var cacheName = utils.fileKey(file.name)
+    var cacheName = file.name
 
     fileReader.onload = function (e) {
       storage.set(cacheName, e.target.result)
@@ -85,18 +84,18 @@ function Editor (loadingFromGist, storage) {
   }
 
   this.hasFile = function (name) {
-    return this.getFiles().indexOf(utils.fileKey(name)) !== -1
+    return this.getFiles().indexOf(name) !== -1
   }
 
   this.getFile = function (name) {
-    return storage.get(utils.fileKey(name))
+    return storage.get(name)
   }
 
   function getFiles () {
     var files = []
     storage.keys().forEach(function (f) {
       // NOTE: as a temporary measure do not show the config file in the editor
-      if (utils.isCachedFile(f) && (f !== (utils.fileKey('.browser-solidity.json')))) {
+      if (f !== '.browser-solidity.json') {
         files.push(f)
         if (!sessions[f]) sessions[f] = newEditorSession(f)
       }
@@ -110,7 +109,7 @@ function Editor (loadingFromGist, storage) {
     var filesArr = this.getFiles()
 
     for (var f in filesArr) {
-      files[utils.fileNameFromKey(filesArr[f])] = {
+      files[filesArr[f]] = {
         content: storage.get(filesArr[f])
       }
     }
@@ -174,8 +173,8 @@ function Editor (loadingFromGist, storage) {
   function setupStuff (files) {
     if (files.length === 0) {
       if (loadingFromGist) return
-      files.push(utils.fileKey(examples.ballot.name))
-      storage.set(utils.fileKey(examples.ballot.name), examples.ballot.content)
+      files.push(examples.ballot.name)
+      storage.set(examples.ballot.name, examples.ballot.content)
     }
 
     SOL_CACHE_FILE = files[0]
diff --git a/src/app/renderer.js b/src/app/renderer.js
index 8bdfb456fd..8cabfc70d6 100644
--- a/src/app/renderer.js
+++ b/src/app/renderer.js
@@ -55,7 +55,7 @@ Renderer.prototype.error = function (message, container, options) {
     var errFile = err[1]
     var errLine = parseInt(err[2], 10) - 1
     var errCol = err[4] ? parseInt(err[4], 10) : 0
-    if (!opt.noAnnotations && (errFile === '' || errFile === utils.fileNameFromKey(self.editor.getCacheFile()))) {
+    if (!opt.noAnnotations && (errFile === '' || errFile === self.editor.getCacheFile())) {
       self.editor.addAnnotation({
         row: errLine,
         column: errCol,
@@ -64,9 +64,9 @@ Renderer.prototype.error = function (message, container, options) {
       })
     }
     $error.click(function (ev) {
-      if (errFile !== '' && errFile !== utils.fileNameFromKey(self.editor.getCacheFile()) && self.editor.hasFile(errFile)) {
+      if (errFile !== '' && errFile !== self.editor.getCacheFile() && self.editor.hasFile(errFile)) {
         // Switch to file
-        self.editor.setCacheFile(utils.fileKey(errFile))
+        self.editor.setCacheFile(errFile)
         self.updateFiles()
       }
       self.editor.handleErrorClick(errLine, errCol)
@@ -287,7 +287,7 @@ Renderer.prototype.contracts = function (data, source) {
   var self = this
 
   var getSource = function (contractName, source, data) {
-    var currentFile = utils.fileNameFromKey(self.editor.getCacheFile())
+    var currentFile = self.editor.getCacheFile()
     return source.sources[currentFile]
   }
 
diff --git a/src/app/utils.js b/src/app/utils.js
index 1abfeb1219..dce59963d2 100644
--- a/src/app/utils.js
+++ b/src/app/utils.js
@@ -1,30 +1,9 @@
 'use strict'
 
-var SOL_CACHE_FILE_PREFIX = 'sol-cache-file-'
-
-function getCacheFilePrefix () {
-  return SOL_CACHE_FILE_PREFIX
-}
-
-function isCachedFile (name) {
-  return name.indexOf(getCacheFilePrefix(), 0) === 0
-}
-
-function fileKey (name) {
-  return getCacheFilePrefix() + name
-}
-
-function fileNameFromKey (key) {
-  return key.replace(getCacheFilePrefix(), '')
-}
-
 function errortype (message) {
   return message.match(/^(.*:[0-9]*:[0-9]* )?Warning: /) ? 'warning' : 'error'
 }
 
 module.exports = {
-  isCachedFile: isCachedFile,
-  fileKey: fileKey,
-  fileNameFromKey: fileNameFromKey,
   errortype: errortype
 }