Rails 3.1 reversible migrations and change_table

Rails
1

Hi,

is the following migration really supposed to be irreversible?

class AddColumnsToUsers < ActiveRecord::Migration
def change
change_table :users do |t|
t.integer :foo
t.integer :bar
end
end
end

I’m using Rails 3.1 RC6 and when trying to redo this migration I’m
getting ActiveRecord::IrreversibleMigration error.

Cheers,
Szymon