Other mistake: After Moe has painted the cop's face with a paint brush, the Stooges walk across a floor that is covered with wet black paint, yet when they are in the room in the next shot, they leave no footprints on the floor.
Other mistake: In the opening shot, while Horace and Clarabelle are skating in the foreground, you can also see them skating in the background.
Other mistake: When Mickey Mouse is standing in front of the dressing table mirror whilst fighting the fire with a pair of scissors, there is no reflection of him in the mirror.