diff --git a/railties/CHANGELOG b/railties/CHANGELOG
index 4d9a295226..da9a20fc60 100644
--- a/railties/CHANGELOG
+++ b/railties/CHANGELOG
@@ -1,5 +1,7 @@
 *SVN*
 
+* Fix script/console --sandbox for internal transactions changes.  #5738 [chris@octopod.info, charles.gerungan@gmail.com]
+
 * Remove the uncanny default of adding all app/models/*/ directories to the load path. This change will break application which expect the current behavior. As
 documented in initializer.rb, the workaround is:
   
diff --git a/railties/lib/console_sandbox.rb b/railties/lib/console_sandbox.rb
index 80f3dbc223..5d57679c43 100644
--- a/railties/lib/console_sandbox.rb
+++ b/railties/lib/console_sandbox.rb
@@ -1,6 +1,6 @@
-ActiveRecord::Base.lock_mutex
+ActiveRecord::Base.send :increment_open_transactions
 ActiveRecord::Base.connection.begin_db_transaction
 at_exit do
   ActiveRecord::Base.connection.rollback_db_transaction
-  ActiveRecord::Base.unlock_mutex
+  ActiveRecord::Base.send :decrement_open_transactions
 end