After coming off the bench to end Forest's three-match losing run, Henderson told the official club website he felt a point was the least the Reds deserved.
"We are slightly disappointed not to have taken all three."
Home boss Aitor Karanka felt Henderson had handled the ball into the net and felt his side were unlucky not to collect three points.
"We deserved to win. We had another two or three clear chances and that should have been enough to do it."
Click below to see the team line-ups and a full text commentary of how the game unfolded.