Nigel Adkins labelled the midweek success at Shrewsbury Town as an 'excellent win away from home'.
Goals from Billy Sharp and Che Adams, who both scored for the second consecutive game saw United leave Shropshire with all three points, despite Abu Ogogo equalising for the Shrews early in the second-half.
And speaking after seeing George Long save Kyle Vassell's penalty prior to Sharp firing the Blades into the lead, boss Adkins remarked:
"It was an excellent win away from home. It was always going to be a tough fixture and a competitive game because Shrewsbury are fighting for their lives.
"Shrewsbury put us under pressure, they threw a lot of balls into the box but we showed terrific character and desire to come through the game and get all three points.
"Credit to the players for the resilience and grit they demonstrated having conceded, we were resolute, we regrouped and went on to score a deserved winner.
"Billy and Che get on the scoresheet, but equally as important, especially because of the timing was the penalty save from George, because that would have given them a massive lift."
The victory leaves United four points outside the top six with three matches remaining and the Gaffer is already looking forward to the weekend's Yorkshire derby against fellow play-off hopefuls Barnsley.
He added: "We have done what we had to do, we have won the game, what happens elsewhere is beyond our control and all we are focusing on is the next game and that's against Barnsley on Saturday.
"It promises to be a cracking game; it's another local derby and another chance for us to pick up points. It will be a good atmosphere with plenty to play for and I am sure our supporters will be right behind the lads again."