Medicament delivery device comprising - a generally elongated housing , having a proximal and a distal end, - a medicament delivery actuation mechanism , capable upon activation, of delivering doses of medicament from - a medicament container , arranged with a medicament delivery member and placed in said housing , - a medicament delivery member shield arranged to said medicament delivery member , - a medicament delivery member guard arranged movable in the proximal end of said housing , wherein said medicament delivery member guard is operably connected to said medicament delivery actuation mechanism , - a protective cap releasibly arranged to said proximal end of said housing , - said protective cap being provided with a medicament delivery member shield remover , a blocking element arranged to said medicament delivery member guard ; - said blocking element is arranged movable between a blocking position and a release position, characterised in that the proximal end of the housing is arranged with an end cover as a housing part ; said blocking element is arranged with an engagement surface arranged to engage with a proximal area of said housing end cover part , said proximal area stop surface comprises the proximal end surface of the housing part ; said blocking element is arranged to engage with a surface of said medicament delivery member shield remover , retaining said blocking element in said blocking position, wherein engagement of said engagement surface with said proximal area causes a blocking of said medicament delivery member guard from movement, and wherein removal of said protective cap and said medicament delivery member shield remover enables a movement of said blocking element to a release position when said engagement surface engages said proximal area , allowing said medicament delivery member guard to move in the distal direction so as to cause an activation of the device for delivering a dose of medicament. - a generally elongated housing , having a proximal and a distal end, - a medicament delivery actuation mechanism , capable upon activation, of delivering doses of medicament from - a medicament container , arranged with a medicament delivery member and placed in said housing , - a medicament delivery member shield arranged to said medicament delivery member , - a medicament delivery member guard arranged movable in the proximal end of said housing , wherein said medicament delivery member guard is operably connected to said medicament delivery actuation mechanism , - a protective cap releasibly arranged to said proximal end of said housing , - said protective cap being provided with a medicament delivery member shield remover , a blocking element arranged to said medicament delivery member guard ; - said blocking element is arranged movable between a blocking position and a release position, characterised in that the proximal end of the housing is arranged with an end cover as a housing part ; said blocking element is arranged with an engagement surface arranged to engage with a proximal area of said housing end cover part , said proximal area stop surface comprises the proximal end surface of the housing part ; said blocking element is arranged to engage with a surface of said medicament delivery member shield remover , retaining said blocking element in said blocking position, wherein engagement of said engagement surface with said proximal area causes a blocking of said medicament delivery member guard from movement, and <EOS>