Glenullin set up an AIB Ulster Club Football semi-final against St Gall's by easily accounting for Newtownbutler.
Paddy Bradley hit 1-3 for Glenullin at Celtic Park
The score was 0-3 apiece early on but Glenullin moved 0-9 to 0-5 up by the break with Ruairi Boylan, Paddy Bradley and Gerard O'Kane among the scorers.
Glenullin moved 0-15 to 0-7 ahead with Boylan hitting his fifth point.
A goalkeeping error by Shane O'Kane gifted 'Butler's goal to Frank Mulligan but Paddy Bradley replied with Glenullin's goal in injury-time.
Paddy Bradley top-scored with 1-3 for Glenullin at Celtic Park with Boylan hitting five points, Eoin Bradley four and the impressive centre half-back Gerard O'Kane notching a second point after the break.
Colm Monahan hit four points for Newtownbutler.