diff --git a/lib/devise/oauth2_providable/engine.rb b/lib/devise/oauth2_providable/engine.rb
index 0869344..0140e3b 100644
--- a/lib/devise/oauth2_providable/engine.rb
+++ b/lib/devise/oauth2_providable/engine.rb
@@ -5,6 +5,7 @@ class Engine < Rails::Engine
       config.devise_oauth2_providable.access_token_expires_in       = 15.minutes
       config.devise_oauth2_providable.refresh_token_expires_in      = 1.month
       config.devise_oauth2_providable.authorization_code_expires_in = 1.minute
+      config.devise_oauth2_providable.scope_settings                = {}
 
       engine_name 'oauth2'
       isolate_namespace Devise::Oauth2Providable
diff --git a/lib/devise/oauth2_providable/mapping.rb b/lib/devise/oauth2_providable/mapping.rb
index 0fb0f70..c6b21e3 100644
--- a/lib/devise/oauth2_providable/mapping.rb
+++ b/lib/devise/oauth2_providable/mapping.rb
@@ -17,7 +17,7 @@ module Oauth2Providable
     #
     #   mapping.prefix
     class Mapping
-      attr_reader :scope_name, :path_prefix, :controllers
+      attr_reader :scope_name, :path_prefix, :controllers, :models
 
       class << self
         def default_controllers
@@ -26,12 +26,22 @@ def default_controllers
             :tokens         => "devise/oauth2_providable/tokens"
           }
         end
+
+        def default_models
+          {
+            :access_token   => 'Devise::Oauth2Providable::AccessToken',
+            :client         => 'Devise::Oauth2Providable::Client',
+            :refresh_token  => 'Devise::Oauth2Providable::RefreshToken',
+            :user           => 'User',
+          }
+        end
       end
 
       def initialize(scope_name, options = {})
         @scope_name  = (options[:scope_name] || scope_name.to_s.singularize).to_sym
         @path_prefix = options[:path_prefix]
         @controllers = self.select_controllers(options)
+        @models      = self.select_models(options)
       end
 
       # Returns the devise scope mapping object associated with this oauth endpoint
@@ -43,6 +53,16 @@ def devise_scope
       def select_controllers(options)
         self.class.default_controllers.merge(options[:controllers] || {})
       end
+
+      def select_models(options)
+        models = self.class.default_models.merge(self.scope_config[:models] || {})
+
+        models.each { |key,value| models[key] = value.constantize }
+      end
+
+      def scope_config
+        ::Rails.application.config.devise_oauth2_providable.scope_settings[@scope_name] || {}
+      end
     end
   end
 end
diff --git a/spec/lib/devise/oauth2_providable/mapping_spec.rb b/spec/lib/devise/oauth2_providable/mapping_spec.rb
index 9ad52bc..1eb15d9 100644
--- a/spec/lib/devise/oauth2_providable/mapping_spec.rb
+++ b/spec/lib/devise/oauth2_providable/mapping_spec.rb
@@ -32,6 +32,47 @@
       end
     end
 
+    describe "#models" do
+      subject { mapping_class.new(:users) }
+
+      context "when no model overrides exist for the scope" do
+        before(:each) do
+          ::Rails.application.config.
+            stub_chain(:devise_oauth2_providable, :scope_settings).
+            and_return({})
+        end
+
+        it "the defaults are used" do
+          subject.models.should eql({
+            :access_token  => Devise::Oauth2Providable::AccessToken,
+            :client        => Devise::Oauth2Providable::Client,
+            :refresh_token => Devise::Oauth2Providable::RefreshToken,
+            :user          => User
+          })
+        end
+      end
+
+      context "when model overrides are specified" do
+        class MyTotallyAwesomeUser 
+        end
+
+        before(:each) do
+          ::Rails.application.config.
+            stub_chain(:devise_oauth2_providable, :scope_settings).
+            and_return({:user => {:models => {:user => 'MyTotallyAwesomeUser'}}})
+        end
+
+        it "uses the overrides instead" do
+          subject.models.should eql({
+            :access_token  => Devise::Oauth2Providable::AccessToken,
+            :client        => Devise::Oauth2Providable::Client,
+            :refresh_token => Devise::Oauth2Providable::RefreshToken,
+            :user          => MyTotallyAwesomeUser
+          })
+        end
+      end
+    end
+
     describe "#path_prefix" do
       context "is specified" do
         subject { mapping = mapping_class.new(:users, {:path_prefix => "member"}) }