CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use in this Registration Statement No. 333-283785 on Form S-6 of our report dated February 24, 2025, relating to the financial statement of FT 11987, comprising Vest Nasdaq 100 Buffered 10 Portfolio, Series 15, one of the series constituting the FT Series, appearing in the Prospectus, which is a part of such Registration Statement, and to the reference to us under the heading "Experts" in such Prospectus.

/s/ DELOITTE & TOUCHE LLP

Chicago, Illinois

February 24, 2025