I got RSU's after deducting taxes. Total income on my W-2 shows base salary+RSU. Importing 1099's from Fidelity, TT is taxing me again. I havent sold any of my shares

I received RSU's after deducting taxes from my employer in 2018. Total income on my W-2 shows base salary+RSU income. Importing 1099's from Fidelity directly into TT, it appears it is taxing me again on the income I generated from the RSU's. The 1099 from Fidelity shows the Cost basis for all the RSU's as 0, which is understood. How do I specify in Turbo Tax that the income from RSU's has already been taxed before. I havent sold any of my shares yet.