It has been well documented the difficulties that the 'Red Devils' have had so far in their season, especially after the embarrassment of back-to-back defeats.
The writing seemed to be on the wall for Jose Mourinho after the second of those loses, a 3-0 home defeat to Tottenham, but things have turned around since then.
Smalling was the man that made sure that United got a crucial second goal as they ended Watford's perfect start to the season on Saturday, and the defender thinks that the team can build on their recent successes.
"Getting two wins on the bounce and coming into a month where there are so many games, I think we are building momentum at the right time." Smalling told 'MUTV'.
"We knew that Watford had confidence and we knew that if we didn't get the third goal the last 10 minutes would be how it played out but we all dug in and knew we needed to win."