The invention relates to a method for removing a deshielder from a device (1) for injection, said device comprising:- a housing (3) receiving a container (6) movable between an initial position, in which a a needle (8) of the container (6) does not extend beyond a distal end of said housing (3), to an insertion position, in which the needle (8) extends beyond said distal end- a needle shield (12) for receiving said needle (8)- said deshielder (33) being coupled to said needle shield (12) by first connecting means (51) and removably assembled to the distal part of the housing (3) by second connecting means (44, 45a, 45b, 57)said first and second connecting means being designed so that a rotational movement of the deshielder (33) about the device axis (2) causes an axial displacement of the needle shield (12) in the distal direction,said method comprising rotating the deshielder about the device axis.
