Coffee lovers, you can have your weekend java fix for free this Saturday and Sunday because Tim Horton’s is giving away free coffees.

Tim Hortons is giving away free coffee on September 28 and 29, in celebration of National Coffee Day on Sunday.

To grab your free coffee you’ll have to use your Tims Reward Card on the Tim Hortons App, or register for one if you don’t already have it.

Effective September 28th and 29th, customers who order through the mobile app to order will “receive one free Tims Rewards reward per day as a thank you for their loyalty.”

There are. few rules though. “The free reward will appear in a Tims Rewards account 24-60 hours after an eligible purchase is made (subject to the offer terms). Limit of one (1) eligible purchase per account per day… Free rewards can be redeemed for hot brewed coffee or hot tea (any size) or baked good (except for Timbits® and bagels).”

The Time Hortons Mobile App is available for download on the Apple App Store and Google Play Store.