Craig Gordon thanked Celtic's fans and his team-mates for supporting him after the keeper was at fault for Inter Milan's third goal in their 3-3 draw.
The Scottish stopper lost possession to Rodrigo Palacio just before half-time and the forward put Inter 3-2 ahead.
John Guidetti scored in second-half injury time as the first leg of the Europa League last 32 tie ended level.
"I'm thankful for the reactions of [supporters] and also to my team-mates, who rallied round," said Gordon.
"It's not a nice thing to give away a goal like that.
"It helped, the reaction of the fans, to allow me to get over that mistake and continue in the game and go on and play a decent second half.
"Obviously, I'd like them to be singing my name for different reasons.
"We probably deserved a draw and it still keeps the tie alive for the second leg"
Xherdan Shaqiri and Palacio put the visitors 2-0 up in Glasgow before Stuart Armstrong's goal for the hosts was followed by an own goal by Inter's Hugo Campagnaro.
Palacio pounced on Gordon's error to give the Italian side a half-time advantage but the Scotland stopper made several second-half saves before Guidetti's late equaliser.
"It happens to every goalkeeper at some point, unfortunately it was me," said Gordon, who spent two years out of the game due to injury before joining Celtic in the summer.
"I responded it to it well and went out and made sure that was the last goal we conceded.
"It probably won't be my last mistake. I've come a long way. If you'd asked me if I would make a mistake in a game like this two years ago, I'd have probably taken it. I suppose that helps me keep things in perspective."
Guidetti's goal was his first since November and he told BBC Scotland: "To score goals is the best feeling in the world and to do it at such a late stage is fantastic.
"I love the big games so I'm happy it was in such a big game."