<PAGE>
Filed Pursuant to Rule 497(e)
Registration File No.: 2-97963
2-81151
2-64782
333-01995
33-24245
33-53295
333-15813
SUPPLEMENT TO THE PROSPECTUSES OF
DEAN WITTER CONVERTIBLE SECURITIES TRUST Dated November 26, 1997
DEAN WITTER DEVELOPING GROWTH SECURITIES TRUST Dated November 26, 1997
DEAN WITTER HIGH YIELD SECURITIES INC. Dated October 31, 1997
DEAN WITTER INCOME BUILDER FUND Dated November 26, 1997
DEAN WITTER INTERMEDIATE INCOME SECURITIES Dated October 28, 1997
DEAN WITTER INTERNATIONAL SMALLCAP FUND Dated December 1, 1997
DEAN WITTER MARKET LEADER TRUST Dated October 28, 1997
The Directors/Trustees of each investment company named above have
approved certain changes to the minimum required investments for each Fund
and various matters pertaining to certain retirement plans, including the
terms of the contingent deferred sales charge applicable to redemptions by
such plans.
The first reference in each of the above Prospectuses to "retirement plans
qualified under Section 401(k) of the Internal Revenue Code ("401(k) plans")
and other employer-sponsored plans qualified under Section 401(a) of the
Internal Revenue Code . . . for which Dean Witter Trust FSB serves as Trustee
or the 401(k) Support Services Group of DWR serves as recordkeeper" is hereby
changed to "employer-sponsored 401(k) and other plans qualified under Section
401(a) of the Internal Revenue Code ("Qualified Retirement Plans") for which
Dean Witter Trust FSB ("DWT") serves as Trustee or DWR's Retirement Plan
Services serves as recordkeeper pursuant to a written Recordkeeping Services
Agreement." All subsequent references to such plans in each of the above
Prospectuses are hereby changed to "Qualified Retirement Plans for which DWT
serves as Trustee or DWR's Retirement Plan Services serves as recordkeeper
pursuant to a written Recordkeeping Services Agreement."
The disclosure in the section of each of the above Prospectuses entitled
"Purchase of Fund Shares" pertaining to eligibility to purchase Class D
shares is hereby modified to reflect the following:
Qualified Retirement Plans for which DWT serves as Trustee or DWR's
Retirement Plan Services serves as recordkeeper pursuant to a written
Recordkeeping Services Agreement must satisfy an initial investment
minimum of $25 million to be eligible to purchase Class D shares. Such
Qualified Retirement Plans will be eligible to purchase Class D shares if
they have a cumulative net asset value of shares of Dean Witter Funds sold
with a front-end sales charge ("FSC Funds") and Class A and Class D shares
of the Fund and other Dean Witter Funds that, together with the current
investment amount, is equal to at least $25 million. For other investors,
the $5 million minimum initial investment requirement and the provisions
regarding eligibility to purchase Class D shares if they have a cumulative
net asset value of shares of FSC Funds and Class A and Class D shares of
the Fund and other Dean Witter Funds that, together with the current
investment amount, is equal to at least $5 million remains unchanged.
The disclosure in the section of each of the above Prospectuses entitled
"Purchase of Fund Shares" pertaining to the Contingent Deferred Sales Charge
("CDSC") is hereby modified to reflect the following:
In the case of Class B shares of the Fund held by Qualified Retirement
Plans for which DWT serves as Trustee or DWR's Retirement Plan Services
serves as recordkeeper pursuant to a written Recordkeeping Services
Agreement, the three-year CDSC presently applicable only to redemptions of
shares held by such plans whose accounts were opened on or after July 28,
1997 shall now also apply to redemptions of shares purchased on or after
July 28, 1997 by such plans whose accounts were opened before July 28,
1997.
December 31, 1997
