Rule 497(d)
FT 378
Supplement to the Prospectus dated November 16, 1999
Sales Charge Discount for Eligible Purchasers
Notwithstanding anything to the contrary in the Prospectus, you can use
your redemption or termination proceeds from any Nike Securities L.P.
sponsored unit investment trust to purchase Units of the Trusts in FT 378
during the initial offering period at the Public Offering Price less 1%.
Dealers and other selling agents will receive a concession or agency commission
of 1.75% of the sales price of Units sold pursuant to this provision.
May 3, 2000
