Hi, I have a model as follows: class CancellationNotification < ActiveRecord::Base # Relationships belongs_to :originator belongs_to :cancellation # Validations validates_presence_of :originator_id, :cancellation_id end As part of my unit test I check that passing no information to CancellationNotification.create() fails validation, But the originator_id does not fail validation. If I change its name it''s fine. Have I clashed with some new "special" AR value or something? This worked in 0.13.1 Kind regards, Steven