diff --git a/app/assets/javascripts/app/controllers/_dashboard/activity_stream.coffee b/app/assets/javascripts/app/controllers/_dashboard/activity_stream.coffee
index 86c75e498..59a0be89d 100644
--- a/app/assets/javascripts/app/controllers/_dashboard/activity_stream.coffee
+++ b/app/assets/javascripts/app/controllers/_dashboard/activity_stream.coffee
@@ -10,7 +10,7 @@ class App.DashboardActivityStream extends App.Controller
   fetch: =>
 
     # use cache of first page
-    cache = App.LocalStorage.get('activity_stream')
+    cache = App.SessionStorage.get('activity_stream')
     if cache
       @load(cache)
 
@@ -30,7 +30,7 @@ class App.DashboardActivityStream extends App.Controller
 
   load: (data) =>
 
-    App.LocalStorage.set('activity_stream', data)
+    App.SessionStorage.set('activity_stream', data)
 
     items = data.activity_stream
 
diff --git a/app/assets/javascripts/app/controllers/_dashboard/rss.coffee b/app/assets/javascripts/app/controllers/_dashboard/rss.coffee
index 678988f16..7a1536bd3 100644
--- a/app/assets/javascripts/app/controllers/_dashboard/rss.coffee
+++ b/app/assets/javascripts/app/controllers/_dashboard/rss.coffee
@@ -3,7 +3,7 @@ class App.DashboardRss extends App.Controller
     super
 
     # bind to rebuild view event
-    @bind( 'rss_rebuild', @fetch )
+    @bind('rss_rebuild', @fetch)
 
     # refresh list ever 600 sec.
     @fetch()
@@ -11,7 +11,7 @@ class App.DashboardRss extends App.Controller
   fetch: =>
 
     # get data from cache
-    cache = App.LocalStorage.get( 'dashboard_rss' )
+    cache = App.SessionStorage.get('dashboard_rss')
     if cache
       cache.head = 'Heise ATOM'
       @render( cache )
@@ -34,7 +34,7 @@ class App.DashboardRss extends App.Controller
               message: data.message
             )
           else
-            App.LocalStorage.set( 'dashboard_rss', data )
+            App.SessionStorage.set('dashboard_rss', data)
             data.head = 'Heise ATOM'
             @render(data)
         error: =>
diff --git a/app/assets/javascripts/app/controllers/ticket_zoom.coffee b/app/assets/javascripts/app/controllers/ticket_zoom.coffee
index 921df131b..79760213c 100644
--- a/app/assets/javascripts/app/controllers/ticket_zoom.coffee
+++ b/app/assets/javascripts/app/controllers/ticket_zoom.coffee
@@ -32,7 +32,7 @@ class App.TicketZoom extends App.Controller
       @overview_id = false
 
     @key = 'ticket::' + @ticket_id
-    cache = App.LocalStorage.get(@key)
+    cache = App.SessionStorage.get(@key)
     if cache
       @load(cache)
     update = =>
@@ -168,7 +168,7 @@ class App.TicketZoom extends App.Controller
         @ticketUpdatedAtLastCall = newTicketRaw.updated_at
 
         @load(data, force)
-        App.LocalStorage(@key, data)
+        App.SessionStorage(@key, data)
 
         if !@doNotLog
           @doNotLog = 1
diff --git a/app/assets/javascripts/app/controllers/widget/tag.coffee b/app/assets/javascripts/app/controllers/widget/tag.coffee
index a3f7048fd..dab945d36 100644
--- a/app/assets/javascripts/app/controllers/widget/tag.coffee
+++ b/app/assets/javascripts/app/controllers/widget/tag.coffee
@@ -19,7 +19,7 @@ class App.WidgetTag extends App.Controller
       @render()
       return
 
-    @tags = App.LocalStorage.get( @cacheKey ) || []
+    @tags = App.SessionStorage.get( @cacheKey ) || []
     if !_.isEmpty(@tags)
       @render()
       @delay(
@@ -42,7 +42,7 @@ class App.WidgetTag extends App.Controller
       processData: true
       success: (data, status, xhr) =>
         @tags = data.tags
-        App.LocalStorage.set( @cacheKey, @tags )
+        App.SessionStorage.set( @cacheKey, @tags )
         @render()
     )
 
diff --git a/app/assets/javascripts/app/lib/app_post/session_storage.coffee b/app/assets/javascripts/app/lib/app_post/session_storage.coffee
index 682a1c184..4733cffaf 100644
--- a/app/assets/javascripts/app/lib/app_post/session_storage.coffee
+++ b/app/assets/javascripts/app/lib/app_post/session_storage.coffee
@@ -6,15 +6,15 @@ class App.SessionStorage
       _instance ?= new _storeSingleton
     _instance.set(key, value)
 
-  @get: (args) ->
+  @get: (key) ->
     if _instance == undefined
       _instance ?= new _storeSingleton
-    _instance.get(args)
+    _instance.get(key)
 
-  @delete: (args) ->
+  @delete: (key) ->
     if _instance == undefined
       _instance ?= new _storeSingleton
-    _instance.delete(args)
+    _instance.delete(key)
 
   @clear: ->
     if _instance == undefined
@@ -36,11 +36,11 @@ class _storeSingleton
   # write to local storage
   set: (key, value) ->
     try
-      sessionStorage.setItem(key, JSON.stringify( value ))
+      sessionStorage.setItem(key, JSON.stringify(value))
     catch e
       if e is QUOTA_EXCEEDED_ERR
         # do something nice to notify your users
-        App.Log.error 'App.LocalStore', 'Local storage quote exceeded!'
+        App.Log.error 'App.SessionStorage', 'Session storage quote exceeded!'
 
   # get item
   get: (key) ->
@@ -58,6 +58,4 @@ class _storeSingleton
 
   # return list of all keys
   list: ->
-    for key of window.sessionStorage
-      list.push key
-    list
+    window.sessionStorage