John Hancock Variable Series Trust I Michele G. Van Leer Chairman and Trustee [GRAPHIC OMITTED] June 21, 2001 Mellon Bond Associates, LLP One Mellon Center, Suite 5400 Pittsburg, PA 15258-0001 Attn: Nancy Y. Banker Vice President Re: Sub-Investment Management Agreement dated April 20, 1998 ----------------------------------- Dear Ms. Banker: This letter will memorialize our mutual agreement to amend Schedule I to the above-referenced Sub-Investment Management Agreement relating to the Bond Index Portfolio, to adjust the current fee schedule, effective as of July 1, 2001. Attached is a revised copy of Schedule I which reduces the fee to a 7 basis point charge for the first $100 million of Net Assets, maintains a 6 basis point charge for the next $150 million, introduces a 3 basis point charge for the next $250 million, and introduces a 1 basis point charge for amounts over $500 million. Please substitute copies of the attached Schedule I for the old copies of Schedule I in your files. Kindly acknowledge receipt of this letter and the attachment, and indicate your agreement to the amendment of Schedule I, by signing and returning the duplicate of this letter. Thank you. JOHN HANCOCK JOHN HANCOCK VARIABLE LIFE INSURANCE COMPANY SERIES TRUST I By: /s/ ROBERT R. REITANO By: /s/ MICHELE G. VAN LEER --------------------- ----------------------- Robert R. Reitano Michele G. Van Leer Senior Vice President & Chairman and Trustee Chief Investment Strategist Received and agreed to: Mellon Bond Associates, LLP By: WILLIAM F. ADAM -------------------- Name: William F. Adam -------------------- Title: Chief Executive Officer ----------------------- SCHEDULE I (As of July 1, 2001) FEES ---- Bond Index - ---------- - -------------------------------------------------------------------------------- Current Net Assets Under Management Sub-Investment Management Fee - -------------------------------------------------------------------------------- On the first $100,000,000 Seven (7) basis points (0.07%) - -------------------------------------------------------------------------------- On the next $150,000,000 Six (6) basis points (0.06%) - -------------------------------------------------------------------------------- On the next $250,000,000 Three (3) basis points (0.03%) - -------------------------------------------------------------------------------- On amounts over $500,000,000 One (1) basis point (0.01%) - --------------------------------------------------------------------------------