Brian Austin Green has a special guest on set of Global’s “BH90210” Wednesday.

Green’s 17-year-old son, Kassius Lijah, stopped by the Vancouver set.

“Family day on set!” Shannon Doherty captioned a video of Kassius interacting with the cast of the revival and Green’s ex-wife Vanessa Marcil reposted.

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“Kassius visiting his dad in Canada,” Marcil, 50, wrote under her post.

The visit comes after Green and Marcil’s nasty custody battle. Marcil claimed that Kassius had been “cut out” of Green and wife Megan Fox’s life.

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“Kass has never met his youngest brother and is not allowed to know where his bio father, stepmother and three younger brothers live,” Marcil wrote to Instagram at the time. “Custody cases hurt the children only and the truth shall set us all free. Put the kids first you guys. There shouldn’t be a ‘more important parent’ kids love both parents equally no matter what either parent’s struggles may be.”

Green and Marcil called it quits shortly after Kassius’ birth, in 2003. The actor began dating Fox shortly after.

“BH90210” premieres August 7 on Global.