"Geoff Horsfield was terrific and played very well," Robson said after the game.
"People have said that because we have six strikers here Geoff could be leaving but he did very well for me last season and I've told him he has a role to play here.
"We were rash in some of our challenges and if you keep giving chances to Laurent Robert from free-kicks he'll score and that's exactly what happened.
"When we were leading 2-0 we had the chance to pass the ball around and defend well but we didn't do that. But we got away with it and I felt that we deserved to win."