Applied for B2 visa on DS160 but Interview confirmation letter states B1. Should we be concerned?

We applied for a B2 visitor visa for tourism purpose. Our DS160 form was submitted with the intended B2 Visa category. But, just noticed that he Appointment confirmation letter generated by the system shows Visa category as B1.
Would this be an issue during interview? Internet search suggest that B1/B2 are usually issued together.
Can we correct this to B2 visa category on the Appointment confirmation letter?

This is totally fine, no issues.