Generally, when you receive income for the same reason in multiple years, then regardless of what you or I say, the IRS considers it SE income. So just make *SURE* you clearly identified the reason you received it. Even then, I would not be surprised if you get a letter because the IRS computer flagged it, auto-generated the letter and a human didn't bother to actually *LOOK* at your return. So keep any and all paperwork related to this, just in case.
