Personally, I think the authorities would be "splitting hairs" if they quibbled about this. But, of course ... ... one never knows in these days of heightened security.

So ... my suggestion - if you've still to apply for your spousal visa - is to enclose a letter with your other docs - explaining the anomaly; I'm sure it's likely to be a fairly common oversight that they'll have seen many times before.

And, besides, if you have complied with all other requirements, then I cannot see it posing too much of a problem - assuming it's already passed NSO scrutiny.