Error: Form 1116 Foreign Tax Credit Comp Wks": Total FEI - Dedns must be entered- what to put?

I live outside the UK and am paying tax in another country so I would like to claim a foreign tax credit. I do not have any deductions I am claiming. I have completed form 1116, but have received this error: Form 1116 Foreign Tax Credit Comp Wks": Total FEI - Dedns must be entered. When looking at the worksheet, it suggests that the empty field is "12.a.2. Total foreign earned income (FEI) less related deductions". Do I simply need to restate my foreign earned income total?