Social Security-The Turbo Tax software does not appear to be correctly calculating the taxable portion of social security for married filing jointly. Is there a solution?

I entered total Soc Sec from box 5 on the  SSA-1099. Completed the remainder of the income section. In the Federal Tax review, the total income used includes 100% of the Soc Sec income when it should be only 85% according to IRS publication 915-Worksheet 1 and using my other income show in Turbo Tax. Is there a solution?