PayPal, which is owned by eBay (NASDAQ:EBAY), could receive a huge boost if its mobile payments deal with McDonald’s (NYSE:MCD) pans out.

The king of fast-food is testing payment via PayPal in about 30 of its restaurants in France, Reuters reports

. French customers who are using the service are able to order McDonald’s food online or on their smartphone via a mobile app. Then, they can pay for that food with their PayPal account and pick up the meal at McDonald’s.

Since McDonald’s has a network of more than 30,000 restaurants, a permanent deal with the company would be an enormous victory for PayPal, which recently made a big move with Discover Financial Services (NYSE:DFS).