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                          MASSACHUSETTS INVESTORS TRUST

                      Supplement to the Current Prospectus


         During the  period  from  October 1, 1997  through  November  28,  1997
(unless extended by MFS Fund  Distributors,  Inc. ("MFD")) (the "Sales Period"),
MFD will pay Capital Analysts, 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 Capital Analysts,  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 October 1, 1997.



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