Continuity mistake: Whilst the losers are at Ben's house discussing the history of Derry, Beverly discovers a poster of "New Kids on the Block" (much to the embarrassment of Ben). She then closes the door to hide the poster. In subsequent scenes the door is closed and the poster is nowhere to be seen.
Continuity mistake: When Mike witnesses the burning hands through the butcher shop, he encounters the group of punk kids in the Pontiac Firebird. In the shot of the boys from the hood of the car, the chubbier kid who wore a trucker hat is driving. When they stop so Henry Bowers can yell at Mike, we see Henry is now in the driver's seat of the car instead of the other boy.
Continuity mistake: When they see the bullies messing with the black kid it shows all the kids' bikes - the kid with brown shorts is riding a rhino Turn and Burn which had a goose-neck braking system. That bike did not come out until 1998.
Continuity mistake: When Bev is hanging in the air, she is wearing a dress, with no leggings. As she gets pulled down with the help of the boys, she is wearing dark coloured leggings.
