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Filed Pursuant to Rule 497(e)
Registration File No.: 2-74980
SUPPLEMENT TO THE PROSPECTUS OF
MORGAN STANLEY DEAN WITTER U.S. GOVERNMENT MONEY MARKET TRUST
DATED MARCH 20, 2000
The Investment Manager has agreed, effective May 1, 2000, to waive its
compensation under its management agreement with the Fund and to assume
operating expenses of the Fund through December 31, 2000, to the extent
necessary to maintain such expenses and compensation at 0.80% of the Fund's
daily net assets on an annualized basis. The Investment Manager has further
agreed to continue to waive such compensation and assume such expenses from
January 1, 2001 through December 31, 2001, to the extent necessary to maintain
such expenses and compensation at 0.75% of the Fund's daily net assets on an
annualized basis.
April 27, 2000
