Actress Nicole Kidman knows just how to shut up her country superstar husband Keith Urban!

But she’s not silencing his loud tunes ““ she’s shutting up his bad moods.

In the new issue of GQ Australia, Keith reveals “negativity and doubt are always creeping into [his] life,” and says Nicole doesn’t even “have to say anything” before he knows to change his mood.

“I hear myself prattling on with negative crap and her loaded silence shuts me up,” Keith says.

See Keith’s full GQ cover story right here.