File Status Code 05

This is not a big deal, but I have an Indexed File that is NOT described as OPTIONAL in the SELECT statement.

When I OPEN the file I-O,  and the file is not there, it creates an empty file (good!  that's what I want!) and returns a status code of 05 (instead of 35).

I would have thought that the status code would have been a 35 in this instance (as it is NOT described as an optional file).

So, my only question is why is it 05 instead of 35 in this case?