Disable Scene View Audio

Hi,

When I have an editor script in which I have an "OnSceneGUI" function. Inside that function I do different actions in the scene depending on which button is pressed. So now my problem is that while it works fine I keep getting that annoying "error" sound, when pressing a button which is not a standard button of Unity. So it would be great if someone knows how to disable that specific sound as it drives me crazy

Best regards,

Fred