This supplement is filed pursuant to Rule 497(d) with regard

to Defined Asset Funds - Municipal Investment Trust Fund, Monthly

Payment Series - 445. The text of the supplement to the Prospectus dated June 3, 1993 is as follows:

Supplement dated June 1, 1994
to Prospectus of Series of
Municipal Investment Trust Fund

Effective immediately, the quantity discount to sales charges will apply to all purchases of Municipal Investment Trust Fund units in the secondary market on the same day, irrespective of any differences in their rates of Effective Sales Charge. The limitation to a range of 0.5%, described under Public Sale of Units - Public Offering Price, has been eliminated.