WITNESSETH:

                                                                  EXHIBIT-(a)1.5

                        XXXXX XXXXXXX INVESTMENT COMPANY

                       AMENDMENT TO MASTER TRUST AGREEMENT

                   Regarding Renaming the Short Term Bond Fund

AMENDMENT NO. 4 to the Amended and Restated Master Trust Agreement dated August
19, 2002 (referred to herein as the "Agreement"), done this 25th day of May,
2004, by the Trustees under such Agreement.

                                   WITNESSETH:

      WHEREAS, Section 4.1 of the Agreement authorizes the Trustees to establish
      and designate sub-trusts and classes thereof; and

      WHEREAS, Section 4.1 of the Agreement provides that a Trustee may act for
      such purpose without shareholder approval;

      NOW, THEREFORE, the Trustees hereby redesignate the following sub-trust as
      set forth herein.

Redesignation of Sub-Trusts.

Without limiting the authority of the Trustees set forth in Section 4.1 of the
Agreement to establish and designate any further sub-trusts, and without
affecting rights and preferences of the existing sub-trusts, the Trustees hereby
redesignate the sub trust-named "Short Term Bond Fund" to be named "Short
Duration Bond Fund" effective on September 15, 2004.

The undersigned hereby certify that the Amendment set forth above has been duly
adopted in accordance with the provisions of the Master Trust Agreement.



IN WITNESS WHEREOF, the undersigned have hereunto set their hands and seals for
themselves and their assigns, as of the day and year first above written. This
instrument may be executed in one or more counterparts, all of which shall
together constitute a single instrument.

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