A medication delivery device (100) comprises a container (101) for holding a medication (104) and a piston (102) which is at least partly arranged within the container (101) and which is axially displaceable with respect to the container (101). The piston (102) is at least partly arranged at a distance from an inner surface (112) of the container (101), thereby providing a channel (116) between the piston (102) and the container (101). The device (100) further comprises a seal (103), the seal (103) being arranged to limit the channel (116) proximally.
