Which branch to submit a binding PR?

Hi, I am still using openhab 2.5 and I wanted to fix something in a binding. I’ve submitted my PR against the 2.5.x branch, but I’m not sure if that’s what I should’ve done. Submitting it to the main branch means the fix won’t be included in any future 2.5.x releases, unless there will no longer be any 2.5.x releases?