How to disable Message - want to add file's parent folder

[micck]

I organize my fbd files not in the standard folder, but in folders that contain all the files of a song. Whenever I save a fbd file there´s a warning message prompting me.
It says: "The file is about to be saved outside of the current data folders.
Do you want to add the file's parent folder as a data folder in the Diagram Gallery?"

Is there a way to disable this message? Because I never want to add this to the gallery.

Thank You!
Michael