The promotion is for National Fire Prevention Week, and will be based on random selection.

Yes, I know - we all get annoyed when our smoke alarms go off while we're cooking dinner. But they're there for a reason, and if they're working, you may get a free pizza out of it.

If they're not working, Flint firefighters will replace them for you.

Here's how it works: If you order a pizza from the Ballenger Highway Dominos TONIGHT between 5 and 8 PM, you might be randomly selected to participate.

"If all of the smoke detectors in the home are functioning, their pizza order will actually be free. If they're not functioning, the firefighters will go ahead and change their smoke detectors so they are - so either way it's a win win," Domin's Dani Bulger told ABC 12.