<PAGE>
MASSACHUSETTS INVESTORS TRUST
Supplement to the Current Prospectus
During the period from May 12, 1997 through July 11, 1997 (unless
extended by MFS Fund Distributors, Inc. ("MFD")) (the "Sales Period"), MFD will
pay Raymond James & Associates, Inc. 100% of the applicable sales charge on
sales of Class A shares of the Fund sold by them during the Sales Period. In
addition, MFD will pay Raymond James & Associates, Inc. an additional commission
equal to 0.50% of the net asset value of all of the Class B shares of the Fund
sold by them during the Sales Period.
The date of this Supplement is May 12, 1997.
<PAGE>
MASSACHUSETTS INVESTORS TRUST
Supplement to the Current Prospectus
During the period from May 12, 1997 through July 11, 1997 (unless
extended by MFS Fund Distributors, Inc. ("MFD")) (the "Sales Period"), MFD will
pay Investment Management and Research, Inc. 100% of the applicable sales charge
on sales of Class A shares of the Fund sold by them during the Sales Period. In
addition, MFD will pay Investment Management and Research, Inc. an additional
commission equal to 0.50% of the net asset value of all of the Class B shares of
the Fund sold by them during the Sales Period.
The date of this Supplement is May 12, 1997.
<PAGE>
MASSACHUSETTS INVESTORS TRUST
Supplement to the Current Prospectus
During the period from May 12, 1997 through July 11, 1997 (unless
extended by MFS Fund Distributors, Inc. ("MFD")) (the "Sales Period"), MFD will
pay Robert Thomas Securities 100% of the applicable sales charge on sales of
Class A shares of the Fund sold by them during the Sales Period. In addition,
MFD will pay Robert Thomas Securities an additional commission equal to 0.50% of
the net asset value of all of the Class B shares of the Fund sold by them during
the Sales Period.
The date of this Supplement is May 12, 1997.
