A wiper device having a wiper arm and a wiper blade device, wherein the wiper blade device has a wiper strip, a spoiler, and a wiper blade, and wherein the wiper blade device furthermore has an adapter with a fluid inlet and two fluid outlets to conduct fluid into fluid channels of the spoiler. The adapter is of multi-part design such that the adapter has a first part, which has the fluid inlet, a first outlet region and a second outlet region. The first part furthermore has a deflection geometry for conducting a fluid entering the fluid inlet to the first outlet region and the second outlet region. The adapter furthermore has a second part and a third part, wherein the second part closes the first outlet region and has the first fluid outlet, and wherein the third part closes the second outlet region and has the second fluid outlet.