Seth Rogen Apologizes for 'Blackface' ... 'Shouldn't Have Happened'

8/3/2018 10:58 AM PDT

Seth Rogen Apologizes for 'Blackface' on 'Good Boys' Child Actor

Seth Rogen says he immediately stepped in when he found out a child actor was put in blackface on the set of the comedy, "Good Boys," which he's producing.

TMZ broke the story ... a stand-in for 11-year-old actor Keith L. Williams was wearing brown makeup to darken his skin, and an afro wig during filming last week in Vancouver. Seth says he's "terribly sorry" it happened. 

He says, "As soon as I was made aware of it, I ensured we put an end to it -- and I give my word that on any project my team and I are involved in, we will take every precaution to make sure something similar does not take place again."

As we reported, production sources claimed the makeup was used on the stand-in to match Keith's complexion ... strictly for lighting purposes.

If that's true, Seth clearly isn't happy about it. He added, "I'm engaging in conversations to make sure I find the best way to do that. It's on me to be proactive. Reacting isn't enough."