Ashton Kutcher took to Facebook to air one big parenting grievance this past weekend -- read what he wrote here. Credit: Jason LaVeris/FilmMagic

Daddy demands! Ashton Kutcher aired one very specific fatherly grievance via Facebook this past weekend, requesting public facilities to be more thoughtful about dads on duty.

"There are NEVER diaper changing stations in mens public restrooms," Kutcher, 37, complained to his 18.7 million plus followers. "The first public men's room that I go into that has one gets a free shout out on my FB page! #‎BeTheChange."

Kutcher has been on active dad duty since last October, when he and his fiancée Mila Kunis welcomed their first child together, daughter Wyatt. The actor told Ellen DeGeneres in December that he and Kunis have opted to raise their tot without the help of a nanny, unlike many of their celebrity counterparts.

"We just want to know our kid," Kutcher explained. "We want to be the people that know what to do when the baby’s crying to make the baby not cry anymore. We want to know, like when she makes a little face or something, we want to be emotionally in touch with her, and I think the only way to do that is by being the one who’s there."

While he waits for the restroom issue to work out, Kutcher is lucky enough to have Kunis by his side.

"The most amazing thing about having a baby is my partner, Mila," he told DeGeneres. "She's the greatest mom, I can't even. I go to work every day and I come home and she's, like, perfect. And it just seems like everything went amazing. And I know that something probably didn't go amazing, but she never tells… it’s unbelievable. She’s incredible."