Disable auto default to current year

Hope somebody can help.
I have produced an Access database for work which happens to have a number of date & time fields. The problem I have is that whilst the automatic default to current year when inputting dd/mm is perfectly ok for most of the fields it is important that one of the date fields does not default in this way as it is a "expiry date" which I want to ensure the operator has entered the full date manually. The expiry date in most instances is 12+ months ahead of the current so as you can see the current year is not acceptable.

Many thanks for taking a look.

Araujo