<PAGE>
                  MERRILL LYNCH OHIO MUNICIPAL BOND FUND OF
               MERRILL LYNCH MULTI-STATE MUNICIPAL SERIES TRUST

                      SUPPLEMENT DATED MARCH 12, 1996 TO
         STATEMENT OF ADDITIONAL INFORMATION DATED NOVEMBER 21, 1995

     The name and  biography of the portfolio  manager of the Fund,  which is
listed under "Management  of the Trust -- Trustees and  Officers", is revised
as follows:

     WILLIAM  MICHAEL PETTY (34) - Portfolio Manager - Vice President of MLAM
since 1994;  Assistant Vice  President of MLAM  from 1993 to  1994; municipal
bond broker with J.J. Kenny Municipal Bond Brokers from 1990 to 1992.

Code #16155-1195ALL



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission