Best way to stop curtains from coming out end of track?

[OldSpice]

I’m just asking because I don’t know if there is a stock part I’m missing or something? I was thinking I could just put a nail/ screw in there to keep the pieces from falling out of the track but if there’s a stock piece out there I think that would look nicer.

[kamzcab86]

You're missing the track locks:

https://www.vancafe.com/KT-0987004-p/kt-0987004.htm

🍺
_________________
~Kamz
1986 Cabriolet: www.Cabby-Info.com
1990 Vanagon Westfalia: Old Blue's Blog
2016 Golf GTI S
"Real knowledge is to know the extent of one's ignorance." - 孔子