One check for "meta"

My site has a form where you can select a Stack Exchange site from a drop-down-menu. Every site has a meta, and including a "Meta X" option for every "X" in the menu (I think) is redundant. To shorten the list, there's a checkbox next to the drop-down-menu labeled "meta." Let's say you choose Stack Overflow and check "meta." Then your selection is Meta Stack Overflow.

Will this confuse users?