AMENDMENT NO. 1 TO THE AMENDED AND RESTATED DECLARATION OF TRUST AND TRUST AGREEMENT OF DB G10 CURRENCY HARVEST MASTER FUND

Exhibit 4.2.1

AMENDMENT NO. 1 TO THE

AMENDED AND RESTATED

DECLARATION OF TRUST AND TRUST AGREEMENT

OF

DB G10 CURRENCY HARVEST MASTER FUND

This Amendment No. 1 (“Amendment No. 1”) to the Amended and Restated Declaration of Trust and Trust Agreement, dated as of September 12, 2006 (the “Declaration of Trust”), of DB G10 Currency Harvest Master Fund (the “Fund”) by and between DB Commodity Services LLC (the “Managing Owner”) and Wilmington Trust Company.

WHEREAS, the Managing Owner has deemed it advisable for the Fund to amend the Declaration of Trust to memorialize changes in certain allocation provisions disclosed in the Declaration of Trust as previously agreed to by the Fund and the Managing Owner;

WHEREAS, the Managing Owner wishes to amend the Declaration of Trust pursuant to Section 11.1(b)(iii) thereof to give effect to the foregoing.

NOW, THEREFORE, in consideration of the premises and of other good and valuable consideration, the receipt and sufficiency of all of which are hereby acknowledged, the Declaration of Trust is amended as follows:

“SECTION 6.3 Daily Allocations. All allocations to Shareholders of items included within the Trust’s Profits and Losses attributable daily shall be allocated solely among the Shareholders recognized as shareholders as of the close of business each Business Day, as follows:

(a) For purposes of maintaining the Capital Accounts and in determining the rights of the Shareholders among themselves, except as otherwise provided in this Article VI, each item of income, gain, loss and deduction shall be allocated among Shareholders in accordance with their respective Percentage Interests.

(b) Any item of loss or deduction otherwise allocated to the Managing Owner pursuant to Section 6.3(a) which is in excess of such Managing Owner’s positive Adjusted Capital Account balance (following adjustment to reflect the allocation of all other items for such period) shall instead be allocated to the other Shareholders in accordance with their respective Percentage Interests to the extent such item of loss or deduction exceeds such Managing Owner’s Adjusted Capital Account balance; provided that the allocation of any such item to such other Shareholders shall only be made hereunder to the extent the allocation would not result in or increase a negative balance in the Adjusted Capital Account of such other Shareholder. If such an allocation occurs, items of income or gain that would otherwise be allocated to the Managing Owner equal to the amount of such allocated loss or deduction will be allocated to the other Shareholders in accordance with their Percentage Interests as quickly as possible.

(c) If any Shareholder unexpectedly receives any adjustments, allocations or distributions described in Treasury Regulation sections 1.704-1(b)(ii)(d)(4), (5) or (6), items of Trust income and gain shall be specially allocated to such Shareholder in an amount and manner sufficient to eliminate a deficit in its Adjusted Capital Account created by such adjustments, allocations or distributions as quickly as possible. This section 6.3(c) is intended to constitute a “qualified income offset” within the meaning of Treasury Regulation section 1.704-1(b)(2)(ii)(d).

(d) Notwithstanding any other provision of this Trust Agreement, upon or prior to the issuance of additional Shares, the Managing Owner shall have the sole and complete discretion, without the approval of any other Shareholder, to amend any provision of this Article VI in any manner, as is necessary, appropriate or advisable to comply with any current or future provisions of the Code or the Treasury Regulations or to implement the terms and conditions of any Shares.”

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IN WITNESS WHEREOF, this Amendment No. 1 has been executed for and on behalf of the undersigned as of the 26^th day of December, 2007.

Acknowledged:

WILMINGTON TRUST COMPANY, not in its

individual capacity but solely as Trustee

of the Fund

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