Why did Turbo Tax add the recovery rebate credit to my taxes paid when my AGI was over $75K?

Turbo Tax added $1008 of Recovery Rebate Credit to my taxes paid (line 30 on the 1040), but my AGI was a little over $76K. I just got a letter from the IRS saying that I owed the $1008 in additional taxes plus $1.88 in interest. Why didn't TT catch that when I filed my return? I used the desktop version and not online.