I just got married and I'm filing jointly. Husband previously took 4 years of American Opportunity Credit. However it says he's qualified again and I can't change this?

As stated, my husband took the American Opportunity Credit in 2010, 2011, 2012, and 2013. We got married in 2016 and I'm filing jointly. TurboTax is telling me that he can claim the AOC credit again, despite that you can only take it for a maximum of 4 times. It will not let me change this! Please help, how can I opt out of this credit?