After the match, Mowbray expressed his slight concern at the lack of experience in his team's attack.
"It's all right but I sat there at the end and thought it's still a bit young and inexperienced around the top end of the pitch," he said.
"We'll try and address that if we can. We do have experience elsewhere. We've got something to build on and some scope still to work over the next few weeks."
Middlesbrough begin their Championship campaign with a trip to Barnsley a week today.