diff --git a/README.md b/README.md
index 0b4c2dd..42f38f9 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
 [![travis status](https://api.travis-ci.org/atomaka/link-share.png)](https://travis-ci.org/atomaka/link-share)
+[![codebeat badge](https://codebeat.co/badges/7a333669-bde0-48aa-ad92-483c4c0c4275)](https://codebeat.co/projects/github-com-atomaka-link-share)
 
 # link-share
diff --git a/helpers/application_helper.rb b/helpers/application_helper.rb
index 678ba9d..779e390 100644
--- a/helpers/application_helper.rb
+++ b/helpers/application_helper.rb
@@ -7,14 +7,17 @@ helpers do
 
   def authorized?
     @auth ||=  Rack::Auth::Basic::Request.new(request.env)
-    return unless @auth.provided? and @auth.basic?
+    return unless @auth.provided? && @auth.basic?
 
-    username, password = @auth.credentials
-
-    user_exists?(username) && settings.users[username] == password
+    authenticate?(@auth.credentials)
   end
 
-  def user_exists?(username)
-     settings.users.keys.include?(username)
+  def authenticate?(credentials)
+    username, password = credentials
+    users.keys.include?(username) && users[username] == password
+  end
+
+  def users
+    settings.users
   end
 end