diff --git a/app/controllers/users/omniauth_callbacks_controller.rb b/app/controllers/users/omniauth_callbacks_controller.rb
index b00b3578960..ad5c2be4db4 100644
--- a/app/controllers/users/omniauth_callbacks_controller.rb
+++ b/app/controllers/users/omniauth_callbacks_controller.rb
@@ -10,8 +10,7 @@ class Users::OmniauthCallbacksController < ApplicationController
     Auth::OpenIdAuthenticator.new("google", "https://www.google.com/accounts/o8/id", trusted: true),
     Auth::OpenIdAuthenticator.new("yahoo", "https://me.yahoo.com", trusted: true),
     Auth::GithubAuthenticator.new,
-    Auth::TwitterAuthenticator.new,
-    Auth::CasAuthenticator.new
+    Auth::TwitterAuthenticator.new
   ]
 
   skip_before_filter :redirect_to_login_if_required