recovery rebate credit

My husband and I received the 1st stimulus of $2400, but he passed away in August of 2020 so I only received $600 for myself during the second round of stimulus. When I am completing my federal taxes it is wanting to give me a $600 recovery rebate credit for my husband because it looks like he did not receive his second stimulus check, but he should not have received it because he had passed already in August. I don't know how to get the credit taken off if I plug in exacting what we received, which was 2400 for the both of us for the 1st round and $600 for the 2nd round for only myself.  What should I do?