Despite a relatively lacklustre display against comparative minnows Otelul Galati, Sir Alex Ferguson saw Wednesday night's victory as a job well done.
Goals from Antonio Valencia and Wayne Rooney - operating in central midfield - ensured United reached the summit of Group C as the preliminary stage of the Champions League edges to a conclusion.
United now know that victory against Benfica in their next outing will guarantee the Red Devils progress to the last 16 as group winners, and Ferguson is pleased fate is in his side's hands.
"Winning was important," the United boss to Sky Sports. "The opposition were very aggressive, they defended well, pressed us everywhere and made it difficult for us.
"The win makes it more comfortable for us at the top of the group and if we beat Benfica we win the group, it's as simple as that. It should be a very good night."
A clean sheet at Old Trafford also represented United's third in as many games, and Ferguson was keen to praise the application of his defence after some recent criticism.
"We didn't lose any goals and that is an important factor at the moment because there has been a lot of criticism of the team in terms of defending this season," he added.
"These are plus signs for us. That is three games in a row without conceding a goal so that is a step forward for us."