TheWhites, who launched their campaign with a home victory over Brighton, won only four league games on the road last season, although McDermott's side enjoyed a 2-1 success at play-off finalists Watford on the final day.
"You can't make big statements about what you are going to do and this is how it is going to go," McDermott said.
"You have to take the game as a one-off, try to go to the game and do the right things and get it right.
"We went to Watford for the last game of last season, we stayed in the game, hung in there and I thought that we were good value for the win.
"We lost against Birmingham (in McDermott's second game in charge) and there was nothing in that game so I'll just work with the team and try to get the details right.
"I know one thing, we will have a great following there."