Exhibit (j)(2)

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in this Post-Effective Amendment No. 41 to the Registration Statement No. 811-06440 on Form N-1A of our report dated May 18, 2007, relating to the financial statements and financial highlights of Fidelity Aberdeen Street Trust, including Fidelity Advisor Freedom Income Fund, Fidelity Advisor Freedom 2005 Fund, Fidelity Advisor Freedom 2010 Fund, Fidelity Advisor Freedom 2015 Fund, Fidelity Advisor Freedom 2020 Fund, Fidelity Advisor Freedom 2025 Fund, Fidelity Advisor Freedom 2030 Fund, Fidelity Advisor Freedom 2035 Fund, Fidelity Advisor Freedom 2040 Fund, Fidelity Advisor Freedom 2045 Fund, and Fidelity Advisor Freedom 2050 Fund appearing in the Annual Report on Form N-CSR of Fidelity Aberdeen Street Trust for the year ended March 31, 2007.

We also consent to the references to us under the headings "Financial Highlights" in the Prospectuses and "Independent Registered Public Accounting Firm" in the Statement of Additional Information, which are a part of such Registration Statement.

/s/ Deloitte & Touche LLP

Deloitte & Touche LLP

Boston, Massachusetts

May 29, 2007