2 files changed, 5 insertions, 8 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb b/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb
index e6a53b2122..46aaaae2ec 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb
@@ -43,8 +43,8 @@ module ActiveRecord
       end
     end
 
-    class ClosedTransaction < Transaction #:nodoc:
-      def initialize; super(nil); end
+    class NullTransaction < Transaction #:nodoc:
+      def initialize; end
       def closed?; true; end
       def open?; false; end
       def joinable?; false; end
@@ -203,14 +203,11 @@ module ActiveRecord
       end
 
       def current_transaction
-        @stack.last || closed_transaction
+        @stack.last || NULL_TRANSACTION
       end
 
       private
-
-        def closed_transaction
-          @closed_transaction ||= ClosedTransaction.new
-        end
+        NULL_TRANSACTION = NullTransaction.new
     end
   end
 end
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
index 99c728814a..a1b6671664 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
@@ -46,7 +46,7 @@ module ActiveRecord
 
     autoload_at 'active_record/connection_adapters/abstract/transaction' do
       autoload :TransactionManager
-      autoload :ClosedTransaction
+      autoload :NullTransaction
       autoload :RealTransaction
       autoload :SavepointTransaction
       autoload :TransactionState