The invention is based on a wiper device for a motor vehicle window, with a wiper arm adapter unit (10a 10j) and a wiper blade adapter unit (12a 12j), which, in a fitted state, form a form-fitting connection. It is proposed that the wiper device has at least one movably mounted latching means (56a 56j) for restricting the wiper arm adapter unit (10a 10j) in the freedom of movement thereof, in the fitted state, at least substantially in a vertical direction (44a 44j) of the wiper blade adapter unit (12a 12j).