Viking River Cruises has formally repositioned itself as an adults-only line.

It is no longer accepting guests under the age of 18, in line with ocean going ships.

Although Viking states it has never offered amenities specifically for kids, the previous minimum age for river cruises was 12.

It updated terms on its website to reflect the official change.

“Due to the nature of our cruise and travel itineraries, the Carrier does not maintain facilities or services on our ships for individuals under the age of 18 years.”

“You must be 18 years old on or before the day you are scheduled to embark on the cruise tour. Cruises through 2019 may still have passengers under 18 [if] the cruises were booked prior to August 1, 2018.”

Viking is not the first to shun the family market in favor of an adults-only clientele.

The U by Uniworld river cruise brand is also grown-ups only and the yet-to-launch Virgin Voyages cruise line will also be adults-only.