broulik added a comment.
I chceked transmission git code and the icon name it uses is actually `transmission-tray-icon`, so you want to have a `transmission.svg` file and the "id" to be `transmission-tray-icon`, then it should work: https://github.com/transmission/transmission/blob/master/qt/MainWindow.cc#L302 REVISION DETAIL https://phabricator.kde.org/D25815 To: vinzenzv, #vdg, ndavis Cc: broulik, ndavis, ngraham, iasensio, kde-frameworks-devel, LeGast00n, fbampaloukas, GB_2, trickyricky26, michaelh, bruns