For the Foreign Tax Exclusion, physical presence, test, how to calculate trip info for personal travel when days in the US is set to a minimum of 1?

I spent some time in the US on vacation after being posted abroad for a job. On one trip, I did not work at all but in the "Trip Information" section, I am required to state that I worked at least one day in the U.S. on business. I did not. What can I do?