Starting April 25, the grilled sausages will return to menus at 125 McDonald’s locations in southeast Wisconsin, Milkwaukee’s TMJ4 reports. The chain will be celebrating the launch with an event at a Ronald McDonald House in Milwaukee, where they will grill up some Johnsonville brats for families and children getting treatment at nearby hospitals.

A McDonald’s spokesperson told Fortune that this will only be a limited time offer, lasting until May 22.

The brats were first introduced to McDonald’s menus back in 1998, but they haven’t been served at the chain since 2009. The timing of their return doesn’t seem surprising considering Burger King (BKW) only recently began selling hot dogs at its restaurants nationwide. It’s the first time Burger King has ever offered hot dogs, a move that Burger King’s president of North American operations Alex Macedo said was the biggest change up to the chain’s menu is nearly 40 years.

Adding hot dogs to its menu appears to have been a hit for Burger King so far. According to The Street, the CEO of Carrols Restaurant Group (TAST), the largest operator of Burger King locations in the country, said in an earnings call last month that they have noticed an “overwhelming response” despite “no advertising.”