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.

The Egg McMuffin is turning 50, and fans can celebrate with a huge discount. McDonald’s is celebrating the 50th anniversary of the beloved breakfast sandwich, which debuted in 1975, with a special deal on everyone’s breakfast favorite — but only for one day.

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.