424(B)(3) 333-105089 SUPPLEMENT DATED AUGUST 5, 2004 TO THE PROSPECTUS DATED AUGUST 5, 2004 FOR THE GUARANTEED INTEREST ACCOUNT WITH MARKET VALUE ADJUSTMENT UNDER FLEXIBLE PAYMENT VARIABLE ANNUITY CONTRACTS SUPPLEMENT DATED AUGUST 5, 2004 TO MONY VARIABLE ANNUITY PROSPECTUS DATED MAY 3, 2004 AND MONY CUSTOM MASTER PROSPECTUS DATED MAY 4, 2004 FOR THE INDIVIDUAL FLEXIBLE PAYMENT VARIABLE ANNUITY CONTRACTS ISSUED BY MONY LIFE INSURANCE COMPANY OF AMERICA 1290 AVENUE OF THE AMERICAS NEW YORK, NEW YORK 10104 212-554-1234 Effective August 5, 2004, you may resume making purchase payments or transfers, or initiate rollovers to the Guaranteed Interest Account with Market Value Adjustment as described in the Prospectus. PLEASE KEEP THIS SUPPLEMENT WITH YOUR PROSPECTUS FOR FURTHER REFERENCE.