Are you using one of the TurboTax online editions? If so, see this TurboTax support FAQ for correcting an AGI - https://ttlc.intuit.com/community/agi/help/where-do-i-correct-my-agi-in-turbotax-online/00/26311
Or if you are using one of the TurboTax desktop CD/Download editions see this TurboTax support FAQ for correcting an AGI - https://ttlc.intuit.com/community/agi/help/where-do-i-go-to-correct-my-agi-in-the-turbotax-cd-downlo...
