diff --git a/app/assets/javascripts/app/controllers/_settings/area.js.coffee b/app/assets/javascripts/app/controllers/_settings/area.js.coffee
index 1978f10c7..0c8f8476d 100644
--- a/app/assets/javascripts/app/controllers/_settings/area.js.coffee
+++ b/app/assets/javascripts/app/controllers/_settings/area.js.coffee
@@ -65,6 +65,5 @@ class App.SettingsAreaItem extends App.Controller
       success: =>
 
         # login check
-        auth = new App.Auth
-        auth.loginCheck()
+        App.Auth.loginCheck()
     )
diff --git a/app/assets/javascripts/app/controllers/getting_started.js.coffee b/app/assets/javascripts/app/controllers/getting_started.js.coffee
index 1bab213d7..185aad2d2 100644
--- a/app/assets/javascripts/app/controllers/getting_started.js.coffee
+++ b/app/assets/javascripts/app/controllers/getting_started.js.coffee
@@ -90,8 +90,7 @@ class Index extends App.Controller
 
         if @master_user
           @master_user = false
-          auth = new App.Auth
-          auth.login(
+          App.Auth.login(
             data: {
               username: @params.login,
               password: @params.password,
@@ -113,8 +112,7 @@ class Index extends App.Controller
     @log 'login:success', data
 
     # login check
-    auth = new App.Auth
-    auth.loginCheck()
+    App.Auth.loginCheck()
   
     # add notify
     Spine.trigger 'notify:removeall'
diff --git a/app/assets/javascripts/app/controllers/login.js.coffee b/app/assets/javascripts/app/controllers/login.js.coffee
index f043e08c8..4c15d2319 100644
--- a/app/assets/javascripts/app/controllers/login.js.coffee
+++ b/app/assets/javascripts/app/controllers/login.js.coffee
@@ -60,8 +60,7 @@ class Index extends App.Controller
     @username = params['username']
     
     # session create with login/password
-    auth = new App.Auth
-    auth.login(
+    App.Auth.login(
       data:    params,
       success: @success
       error:   @error,
diff --git a/app/assets/javascripts/app/controllers/logout.js.coffee b/app/assets/javascripts/app/controllers/logout.js.coffee
index 360f7e76e..ef6ef6d98 100644
--- a/app/assets/javascripts/app/controllers/logout.js.coffee
+++ b/app/assets/javascripts/app/controllers/logout.js.coffee
@@ -10,8 +10,7 @@ class Index extends Spine.Controller
   signout: ->
     
     # remove remote session
-    auth = new App.Auth
-    auth.logout()
+    App.Auth.logout()
 
     # remoce local session
     @log 'Session', window.Session
diff --git a/app/assets/javascripts/app/controllers/signup.js.coffee b/app/assets/javascripts/app/controllers/signup.js.coffee
index 02b649f74..a5f7fd091 100644
--- a/app/assets/javascripts/app/controllers/signup.js.coffee
+++ b/app/assets/javascripts/app/controllers/signup.js.coffee
@@ -61,8 +61,7 @@ class Index extends App.Controller
     # save user
     user.save(
       success: (r) =>
-        auth = new App.Auth
-        auth.login(
+        App.Auth.login(
           data: {
             username: @params.login,
             password: @params.password,
@@ -77,8 +76,7 @@ class Index extends App.Controller
   success: (data, status, xhr) =>
 
     # login check
-    auth = new App.Auth
-    auth.loginCheck()
+    App.Auth.loginCheck()
 
     # add notify
     Spine.trigger 'notify:removeall'