An assembly for a drug delivery device includes a dose setting member to be moved by a user from an initial position to a dose sett position and a housing part. The dose setting member and the housing part are connected to form a housing of the assembly. The assembly includes an activation member coupled to the dose setting member to convert a rotation of the dose setting member with respect to the housing into a proximal movement of the activation member with respect to the dose setting member when the dose setting member is moved from the initial position to the dose set position. The activation member has a proximal end section extending from an activation face of the activation member, where in the initial position of the dose setting member, the proximal end section is fully in or slightly protrudes from the proximal end of the housing.
