Despite starting their season with a disappointing result, Rooney has vowed that the team will look to improve when they travel to Sunderland next Saturday.
"We've got eight days now until the next game," he told MUTV. "We need to prepare right and get this result out of our system. We start our season from there.
"It was a disastrous start for us, but we have to move on. We're not happy, the manager's not happy. We'll have to go through what went wrong during the week. We'll do that."
Rooney opened his account for the season against Swansea, netting an equaliser before Gylfi Sigurdsson's winning goal.