June 1, 2011 Drury Capital Inc. c/o Drury Capital Services

Exhibit 10.5(a)

June 1, 2011

Xxxxx Capital Inc.

c/o Drury Capital Services

00 Xxxxxxx Xxxxxx — Suite 340

Princeton, NJ 08542

Attention: Xx. Xxxxxxx Xxxxx

Re: Management Agreement Renewal

Dear Xx. Xxxxx:

We are writing with respect to your management agreements concerning the commodity pool to which reference is made below (the “Management Agreement”). We are extending the term of the Management Agreement through June 30, 2012 and all other provisions of the Management Agreement will remain unchanged.

• Tactical Diversified Futures Fund L.P.

• CMF Xxxxx Master Fund

• Institutional Futures Portfolio L.P.

Please acknowledge receipt of this modification by signing one copy of this letter and returning it to the attention of Xx. Xxxxxxxx Xxxxx at the address above or fax to 000-000-0000. If you have any questions I can be reached at 000-000-0000.

Very truly yours,

CERES MANAGED FUTURES LLC
By:		/s/ Xxxxxxxx Xxxxx
		Xxxxxxxx Xxxxx
		Chief Financial Officer & Director

XXXXX CAPITAL INC.
By:		/s/ Xxxxxxx X. Xxxxx
		Print Name: Xxxxxxx X. Xxxxx

XX/sr