You can get a McDonald’s egg McMuffin for $1 – but you’ll have to act fast. On Sunday, March 2, McDonald’s is offering customers a classic egg McMuffin or sausage McMuffin with egg for $1 when they order in the mobile app, according to the fast food chain. No additional purchase is required, but you must be a rewards member.

McDonald’s is offering a special deal on one of its most iconic breakfast items. To mark the 50th anniversary of the Egg McMuffin, customers can purchase an Egg McMuffin or a Sausage McMuffin with Egg for just $1—exclusively through the McDonald’s app.

When it comes to breakfast, nothing beats a hot sandwich from McDonald’s. And now, there’s even more reason to grab one on your way to work. The fast-food giant is kicking off a golden breakfast celebration in honor of the 50th anniversary of the Egg McMuffin.