The program tells me my employer took too much SS tax. But, when I calculate based on the TurboTax equation, it looks correct. What should I do?

Equations says to multiply amount in box 3 by 0.062. When I do that, I come up with the same number that is on my W-2. So why is TT telling me my employer withheld too much? I don't know how to sort this out and I can't file until I do.