Wiper blade, in particular for a motor vehicle

A wiper blade (10) comprising a wiper strip (12), a supporting element (14), a liquid channel (26), a closure plug (36), an end cap (22) defining a receiving cavity, and a wind deflector strip (18), characterized in that the end cap (22) is assembled on the wind deflector strip (18), wherein the liquid channel (26) is disposed within the wind deflector strip (18) and extends along a longitudinal extent (L) to a channel end (34), wherein the closure plug (36) is disposed entirely within the liquid channel (26) and closes the liquid channel (26) in a region of the channel end (34), wherein the channel end (34) is disposed within the receiving cavity of the end cap (22), wherein the channel end (34) is not connected to or in contact with any component of the end cap (22), such that the channel end (34) is open to the receiving cavity within the end cap (22), and wherein the closure plug (36) is not connected to or in contact with any component of the end cap (22), and is spaced away from the channel end (34).