False errors on simple Specs2 test

I'm trying IntelliJ for the first time but have hit an immediate problem.

I've imported the spray starter sbt project from here

https://github.com/spray/spray-template/tree/on_spray-can_1.1

This builds fine from sbt, but IntelliJ is reporting that it cannot resolve the symbol "should" in the MyServiceSpec.

Is this a known issue or am I doing something stupid?

Thanks