Manchester United's official Twitter account mistakenly credited Kolo Toure for Manchester City's third goal last night, scored by the Liverpool defender's brother Yaya Toure.
Just when you thought things couldn't get any worse for the reigning Premier League champions after their humiliating 3-0 defeat at Old Trafford on Tuesday evening, the club's social media channel dropped a clanger with the completely inaccurate post.
@MaUtd tweeted: "Bosnian striker Dzeko netted again on 56 minutes before Kolo Toure round off the scoring in the 90th minute. #mufc"
Of course, it wasn't the Liverpool centre-back who popped up in Manchester United's penalty box last night, but the influential Manchester City midfielder who capped another domineering performance with a well-taken goal in the final minute.
The tweet was later deleted by Manchester United's account, but not before the error was pounced upon by numerous followers that began to favourite, retweet and respond to the post.
To make matters worse, in his post-match interview David Moyes made the embarrassing omission that Manuel Pellegrini's side have set the standard for Manchester United to aspire to be.
His comments are unlikely to endear him any further to Red Devils supporters, who have already been embarrassed by back-to-back home defeats against Brendan Rodgers's Liverpool and now Manchester City.