Windscreen wiper device

A windscreen wiper device of the flat blade type comprising an elastic, elongated carrier element, as well as an elongated wiper blade of a flexible material, which can be placed in abutment with a windscreen to be wiped, which wiper blade includes at least one groove, in which groove a longitudinal strip of the carrier element is disposed, wherein free ends of said wiper blade are connected to a respective connecting piece, which windscreen wiper device comprises a connecting device for an oscillating wiper arm, and wherein said wiper blade is provided with a spoiler at a side thereof facing away from said windscreen to be wiped, wherein said at least one connecting piece comprises an internal transverse reinforcement rib, wherein said spoiler is removed along a portion of the length of said wiper blade at a distance from a free end of said wiper blade facing said connecting piece so as to form a transverse slit and a ramped upper surface inclining from said free end toward said slit, and wherein said reinforcement rib of said at least one connecting piece is slideable along said ramped surface and receivable with a snap fit into said slit when in a mounted position.