Investment Advisory Agreement Calvert Asset Management Company, Inc. Calvert Social Investment Fund Addendum to Schedule A

Investment Advisory Agreement
Xxxxxxx Asset Management Company, Inc.
Xxxxxxx Social Investment Fund

Addendum to Schedule A

As compensation pursuant to Section 4 of the Investment Advisory Agreement between Xxxxxxx Asset Management Company, Inc. (the "Advisor") and Xxxxxxx Social Investment Fund ("CSIF") dated March 1, 1999, with respect to Xxxxxxx Aggressive Allocation Fund (the "Fund"), the Advisor is entitled to receive from the Fund an annual advisory fee (the "Fee") as shown below. The Fee shall be computed daily and payable monthly, based on the average daily net assets of the Fund.

Xxxxxxx Aggressive Allocation Fund: 0.00%

Date: June 7, 2005