Schedule A Box on Line 18 is checked even though I’m itemizing but deductions are more than standard deduction.

This is perhaps a minor question, but I’ll ask just the same. 

Schedule A Box on Line 18 is checked even though I’m itemizing and my itemized deductions are more than standard deduction. Should this box be checked? It appears I cannot undo in the Forms area. I’ve double checked and have selected to itemized deductions in the Step by Step area.

Thanks!