Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in this Post-Effective Amendment to Registration Statement No. 033-43529on Form N–1A of our report dated May 13, 2020 relating to the financial statements and financial highlights of Fidelity Freedom Index Income Fund, Fidelity Freedom Index 2005 Fund, Fidelity Freedom Index 2010 Fund, Fidelity Freedom Index 2015 Fund, Fidelity Freedom Index 2020 Fund, Fidelity Freedom Index 2025 Fund, Fidelity Freedom Index 2030 Fund, Fidelity Freedom Index 2035 Fund, Fidelity Freedom Index 2040 Fund, Fidelity Freedom Index 2045 Fund, Fidelity Freedom Index 2050 Fund, Fidelity Freedom Index 2055 Fund, Fidelity Freedom Index 2060 Fund, and Fidelity Freedom Index 2065 Fund, each a fund of Fidelity Aberdeen Street Trust, appearing in the Annual Reports on Form N-CSR of Fidelity Aberdeen Street Trust for the year ended March 31, 2020, and to the references to us under the heading “Independent Registered Public Accounting Firm” in the Statement of Additional Information, which are part of such Registration Statement.

/s/ Deloitte & Touche LLP
Boston, Massachusetts
June 19, 2020