Mignolet's failure to deal with a corner led to Liverpool letting a lead slip against Norwich City.
The Reds were leading 1-0 thanks to a Danny Ings strike until Mignolet's mistake from a corner led to Russell Martin equalising for the Canaries, who held on to take a point from Anfield.
The Belgian is quoted in the Liverpool Echo as saying: “It’s always disappointing to concede from a set-piece, especially as we had been working hard on defending them this week.
“We knew they are a threat from them. I came for the ball, it was a whipped in cross, and I tried to get a fist to it.
“It’s one of those that comes out, they picked up the second ball and scored from it.
“The next time a ball comes in like that I’ll still come for it and try to get something on it."
Mignolet seemed to get a fist on the ball, but not firm enough to clear the penalty area, and in turn put the side in more danger as he was caught off his line.
Of course, it's not the first time that a goalkeeping error from the Reds stopper has been spoken about, though he did atone for his mistake with a crucial save from Matt Jarvis shortly afterwards to prevent the home side from going behind.
But when a side are low on confidence, after getting ahead in the game, the last thing they need is to concede a goal from an entirely avoidable error, which has unfortunately been a symptom of the Reds over the past year to 18 months.
Of course, Liverpool had plenty of chances in the game that they really should have put away, which would have made this a minor blot on the copybook, but instead it has become more significant, and for far too long individual errors have cost Liverpool at crucial times.