TTP schedule A line 18: why is this selected when not chosen & not needed?

After finishing my taxes and reviewing the print out I see that turbo tax has marked the schedule A line 18 deduction override as selected when I & the program acknowledge itemized is greater than standard & itemized is what is incorporated on form 1040 line 12 for my return, which the more beneficial option. How do I clear this box? Are there any issues with ignoring this option being selected?