The former Sunderland academy graduate, 30, was on enemy territory in his native North East.
Pickford, who has long been a pantomime villain among Newcastle fans down the years, was in the home dressing room tonight as England hosted Bosnia in Geordieland.
According to Channel 4 commentator Steve Bower, the Everton star headed to the away dressing room at half time, presumably out of habit.
Fans loved the gaffe, with one writing on social media: “Quality by Pickford. Trolling Newcastle by trying to go in the away dressing room haha.”
While a second joked: “Jordan Pickford going into the wrong dressing room because he doesn’t want to step foot in any room that Sean Longstaff has also been in.”
An Everton fan quipped: “Jordan Pickford going into the away dressing room sums up Jordan Pickford.”
Pickford made his gaffe following a 45 minutes of action that left a lot to be desired.
Fans fumed online at the goalless, action-less half of football, with one calling it on social media: “An utterly diabolical half of football.”
A second said: “Terrible terrible terrible football man. Wth did we actually just watch?”
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A third said: “I fell asleep watching that.”
A fourth added: “How are we gonna win the Euros with whatever the hell this is ??!!”
Another said: “That’s 45 +1 mins I won’t be getting back.”
England eventually took the lead on the hour mark, with Cole Palmer converting from the penalty spot to net his first Three Lions goal.