Using scope causes models not to respect non-pluralization

My first ticket so forgive errors please.

In config/environment.rb we have

ActiveRecord::Base.pluralize_table_names = false

Which works flawlessly until we add a named scope to a model such as:

class Disease < ActiveRecord::Base
  scope :active, where(:active=>true)
...

Without the scope, the model/DB interaction works perfectly. However, adding the scope line causes ActiveRecord to pluralize the table name.

Overriding with

set_table_name 'disease'

gets it working again but shouldn't be necessary.

Thanks
Michael.