If you don't enter the 1099-Misc (delete the one you have already entered), but instead go to the section for entering rent or royalty and describe the property as Book Royalties, and the property type as intellectual property royalties, you should be able to add the amount of royalty you were paid in the income received and not have SE tax assessed against your income. The exact process will depend on what version of TurboTax you are using and if you are using the online or desktop version.
