diff --git a/Gemfile b/Gemfile
index 1edc6c2..6d69f9e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,5 @@
 source "http://rubygems.org"
 
-gem 'configatron'
 gem 'json'
 
 group :development do
diff --git a/gcm_on_rails.gemspec b/gcm_on_rails.gemspec
index 5fc23ee..f7ffe5b 100644
--- a/gcm_on_rails.gemspec
+++ b/gcm_on_rails.gemspec
@@ -47,20 +47,17 @@ Gem::Specification.new do |s|
     s.specification_version = 3
 
     if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
-      s.add_runtime_dependency(%q<configatron>, [">= 0"])
       s.add_runtime_dependency(%q<json>, [">= 0"])
       s.add_development_dependency(%q<rdoc>, ["~> 3.12"])
       s.add_development_dependency(%q<bundler>, ["~> 1.0.0"])
       s.add_development_dependency(%q<jeweler>, ["~> 1.8.4"])
     else
-      s.add_dependency(%q<configatron>, [">= 0"])
       s.add_dependency(%q<json>, [">= 0"])
       s.add_dependency(%q<rdoc>, ["~> 3.12"])
       s.add_dependency(%q<bundler>, ["~> 1.0.0"])
       s.add_dependency(%q<jeweler>, ["~> 1.8.4"])
     end
   else
-    s.add_dependency(%q<configatron>, [">= 0"])
     s.add_dependency(%q<json>, [">= 0"])
     s.add_dependency(%q<rdoc>, ["~> 3.12"])
     s.add_dependency(%q<bundler>, ["~> 1.0.0"])
diff --git a/lib/gcm_on_rails/app/models/gcm/device.rb b/lib/gcm_on_rails/app/models/gcm/device.rb
index 165aeaa..ea604af 100644
--- a/lib/gcm_on_rails/app/models/gcm/device.rb
+++ b/lib/gcm_on_rails/app/models/gcm/device.rb
@@ -11,8 +11,6 @@
 class Gcm::Device < Gcm::Base
   self.table_name = "gcm_devices"
 
-  attr_accessible :registration_id
-
   has_many :notifications, :class_name => 'Gcm::Notification', :dependent => :destroy
   validates_presence_of :registration_id
   validates_uniqueness_of :registration_id
diff --git a/lib/gcm_on_rails/app/models/gcm/notification.rb b/lib/gcm_on_rails/app/models/gcm/notification.rb
index 8b144ac..e79edfd 100644
--- a/lib/gcm_on_rails/app/models/gcm/notification.rb
+++ b/lib/gcm_on_rails/app/models/gcm/notification.rb
@@ -30,11 +30,7 @@ class << self
     #
     def send_notifications(notifications = Gcm::Notification.all(:conditions => {:sent_at => nil}, :joins => :device, :readonly => false))
 
-      if configatron.gcm_on_rails.delivery_format and configatron.gcm_on_rails.delivery_format == 'plain_text'
-        format = "plain_text"
-      else
-        format = "json"
-      end
+      format = "json"
 
       unless notifications.nil? || notifications.empty?
         api_key = Gcm::Connection.open
diff --git a/lib/gcm_on_rails/gcm_on_rails.rb b/lib/gcm_on_rails/gcm_on_rails.rb
index 9db5d55..bc9c963 100644
--- a/lib/gcm_on_rails/gcm_on_rails.rb
+++ b/lib/gcm_on_rails/gcm_on_rails.rb
@@ -1,4 +1,3 @@
-require 'configatron'
 require 'uri'
 
 module Gcm
@@ -85,4 +84,4 @@ def initialize(message)
     ActiveSupport::Dependencies.autoload_paths << path
     ActiveSupport::Dependencies.autoload_once_paths.delete(path)
   end
-end
\ No newline at end of file
+end
diff --git a/lib/gcm_on_rails/libs/connection.rb b/lib/gcm_on_rails/libs/connection.rb
index c240329..7813b7a 100644
--- a/lib/gcm_on_rails/libs/connection.rb
+++ b/lib/gcm_on_rails/libs/connection.rb
@@ -24,7 +24,7 @@ def send_notification(notification, api_key, format)
           data = "#{extra_data}#{post_data}"
         end
 
-        url_string = configatron.gcm_on_rails.api_url
+        url_string = CONFIG[:api_url]
         url = URI.parse url_string
         http = Net::HTTP.new(url.host, url.port)
         http.use_ssl = true
@@ -36,7 +36,7 @@ def send_notification(notification, api_key, format)
       end
 
       def open
-        configatron.gcm_on_rails.api_key
+        CONFIG[:api_key]
       end
     end
   end