Wayne Rooney scored the only goal of the Champions League game with his first goal of the season after missing more than a month with a broken bone in his foot.
"It was only his fourth or fifth match and he is still trying to get his rhythm and real match fitness," said Ferguson.
"It will do him good. Goals always do players good, particularly when goals are expected of them, so I'm pleased with that."
Ferguson liked what he saw from United after a tentative performance in the first half.
"It was great movement and good passing which gave us the penetration we were looking for and created the opening for Wayne's excellent goal," he said. "We controlled most of the match. We tired a little bit towards the end when they started to take risks going for an equalizer but in the main I think we deserved the result."
The result was the sixth 1-0 win in eight games for United, whose other results were a 2-0 win over Chelsea in EPL action and a 2-0 loss to Coventry -- with its "B" team -- in a League Cup match.
"It's a disease, I'm trying to get a vaccine for it," Ferguson said of the rash of 1-0 results. "It's not a concern. The goals will come."