Stop "searching for compilable files..." every time?

Hi,

I change one line of code and hit Shift-F10 to re-run a class, and every time it takes 10+ seconds with the messages "searching for compilable files..." at the bottom of the screen. Is there a way to get it to stop this? It's the only downside of using IntelliJ/Java/Kotlin vs Python for some scripts I have where I'm constanting making little changes and re-running.

I'm using IntelliJ Ultimate 14.1.3, and the project has Kotlin files. It's a Kotlin class with main method that I'm re-running. Maybe it's Kotlin-specific and I should ask on that forum instead?

Rob