Ulster's Heinken Champions Cup hangover continued at Scotstoun as they slumped to a 30-7 defeat to Glasgow Warriors on Friday night.
The hosts earned a bonus-point win to remain top of Conference A but they had to bounce back from a poor start.
The lead was soon wiped out however.
Fraser Brown dotted down in the 13th minute with Adam Hastings and then Tommy Seymour - on the stroke of half-time - leaving Glasgow 20-7 to the good.
Prop Zander Fagerson sealed the bonus on the turnaround with Hastings adding a 58th-minute penalty.
Ulster remain second in Conference B but Benetton could leapfrog them with a win against Leinster on Saturday.