diff --git a/lib/google/api_client.rb b/lib/google/api_client.rb
index 9c6ffd3ee..6da8ca616 100644
--- a/lib/google/api_client.rb
+++ b/lib/google/api_client.rb
@@ -26,23 +26,38 @@ module Google #:nodoc:
         # NOTE: Do not rely on this default value, as it may change
         @options[:parser] = JSONParser.new
       end
-      unless @options[:authentication]
-        require 'google/api_client/auth/oauth_1'
+      unless @options[:authorization]
+        require 'signet/oauth_1/client'
         # NOTE: Do not rely on this default value, as it may change
-        @options[:authentication] = OAuth1.new
+        @options[:authorization] = Signet::OAuth1::Client.new(
+          :temporary_credential_uri =>
+            'https://www.google.com/accounts/OAuthGetRequestToken',
+          :authorization_uri =>
+            'https://www.google.com/accounts/OAuthAuthorizeToken',
+          :token_credential_uri =>
+            'https://www.google.com/accounts/OAuthGetAccessToken',
+          :client_credential_key => 'anonymous',
+          :client_credential_secret => 'anonymous'
+        )
       end
-      unless @options[:transport]
-        require 'google/api_client/transport/http_transport'
-        @options[:transport] = HTTPTransport
+      unless @options[:http_adapter]
+        require 'httpadapter/adapters/net_http'
+        @options[:http_adapter] = HTTPAdapter::NetHTTPRequestAdapter
       end
     end
-    
+
     ##
     # Returns the parser used by the client.
     def parser
       return @options[:parser]
     end
-    
+
+    ##
+    # Returns the authorization mechanism used by the client.
+    def authorization
+      return @options[:authorization]
+    end
+
     def build_request(*args, &block)
       if !args.empty? || block
         # Build the request!
diff --git a/spec/google/api_client_spec.rb b/spec/google/api_client_spec.rb
index 7c7e29881..a38dafc80 100644
--- a/spec/google/api_client_spec.rb
+++ b/spec/google/api_client_spec.rb
@@ -14,12 +14,12 @@
 
 require 'spec_helper'
 
+require 'signet/oauth_1/client'
+require 'httpadapter/adapters/net_http'
+
 require 'google/api_client'
 require 'google/api_client/version'
 require 'google/api_client/parser/json_parser'
-require 'google/api_client/auth/oauth_1'
-require 'google/api_client/transport/http_transport'
-
 
 describe Google::APIClient, 'with default configuration' do
   before do
@@ -33,6 +33,18 @@ describe Google::APIClient, 'with default configuration' do
   it 'should use the default JSON parser' do
     @client.parser.should be_instance_of(Google::APIClient::JSONParser)
   end
+
+  it 'should use the default OAuth1 client configuration' do
+    @client.authorization.temporary_credential_uri.to_s.should ==
+      'https://www.google.com/accounts/OAuthGetRequestToken'
+    @client.authorization.authorization_uri.to_s.should include(
+      'https://www.google.com/accounts/OAuthAuthorizeToken'
+    )
+    @client.authorization.token_credential_uri.to_s.should ==
+      'https://www.google.com/accounts/OAuthGetAccessToken'
+    @client.authorization.client_credential_key.should == 'anonymous'
+    @client.authorization.client_credential_secret.should == 'anonymous'
+  end
 end
 
 describe Google::APIClient, 'with custom pluggable parser' do