The 21-year-old was adjudged to have got back just in time to stop Nacho Novo's close-range effort from fully crossing the line in Wednesday's 1-1 draw with Rangers.
The Ibrox side were adamant a goal should have been awarded but assistant referee Martin Kryans disagreed and Chisholm has backed the officials' decision.
Now, the youngster insists the Easter Road outfit are solely focused on following up their Edinburgh derby win over Hearts and the point which knocked Rangers off the top of the league with a victory that would damage Celtic's title credentials.
He said: "The linesman's got a difficult job and he decided it wasn't a goal, so end of.
"Rangers can still win the league and that's not going to lose them the league.
"They had chances before that. Novo had two open goals, you could say, and if he takes them there was no reason why Rangers couldn't have gone on to win the match. But he didn't.
"If it happened again on Sunday I would clear it off the line and then there's going to be the same stories.
"As players at Hibs at the moment we are just looking at each game trying to get three points, whether it's Rangers or Celtic, or Hearts, Aberdeen or Dundee United."