To correct this change the account on the Debit side of the Employer portion of the tax

1.) In Configuration select Taxes
2.) Open the Federal Tax table for the current year you are working in
3.) Select the GL Distribution button
4.) Under Social Security Tax, select Employer Tax
5.) In the drop down for Distribution select Debit (DR) Distribution
6.) Enter the Expense account of your choice
7.) Repeat steps 4 through 6 for Medicare Tax
8.) Save and close