IntelliJ falsely tells me that Kotlin is not configured

I’m using Maven to set up Kotlin, and everything works great. The build works, the standard libraries work, everything. However, IntelliJ still won’t hide its banner saying that Kotlin isn’t configured. It doesn’t go away after I click Configure, or any options in the dialog box (I’ve tried every combination of settings in the Configure dialog).

Is there another way to hide this banner?

Whoops! I was using the wrong version of Kotlin. Fixed now!