The online dating service Tinder must change one of its key monetization strategies. A Los Angeles appellate court reversed a lower court’s decision on Monday and told Tinder to stop charging older users more money per month for its “Tinder Plus” service.

The proposed class-action lawsuit, filed by Tinder user Allan Candelore in February 2016, alleged that Tinder engaged in illegal age discrimination by charging its 30-and-older users $19.99 per month for Tinder Plus while offering younger users either $9.99 or $14.99 monthly subscription rates for the same services. Tinder Plus includes app perks such as additional “super-likes” which are more likely to attract a dater’s response.

In an initial trial, Tinder’s defense argued that the pricing was based on market testing that showed a market-driven reason to offer lower prices to “budget constrained” users.