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                              MFS HIGH INCOME FUND
                            MFS STRATEGIC INCOME FUND



                      Supplement to the Current Prospectus



         During  the period  from  August 1, 1997  through  September  30,  1997
(unless extended by MFS Fund  Distributors,  Inc. ("MFD")) (the "Sales Period"),
MFD will pay Invest Financial Corporation and Investment Centers of America 100%
of the  applicable  sales  charge on sales of Class A shares of the Fund sold by
them during the Sales Period.


                 The date of this Supplement is August 1, 1997.



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