PS4 controller: where exactly is this plastic part going?

I was just in the process of repairing my PS4 controller when suddenly this little plastic part blew off me. Since I unfortunately did not see where it came from, I now unfortunately have no idea where it has to be placed again.

This part comes all the way back.

This little piece of plastic flew down

well then everything is clear… It must have been above you at the end when it came down! > laugh <

can't really be identified - but look exactly where it fits and what function it can be for… Looks like a small feather

I have found the place I think xD but thank you anyway