Abstract: The invention relates to a device (1) for automatic injection of a product into an injection site, said device (1) further comprising a needle (6) and a needle shield (2) for protection of said needle (6) prior to use of said device, and a housing (300) receiving the container (50) and a deshielder (8) for removing said needle shield (2) from said device (1), said deshielder (8) being coupled to said needle shield (2) and being mounted on the housing (300) in a separable manner, for example through breakable or snap-fit means, said deshielder (8) comprising tamper evidence means that are activated by the removal of at least one part of said deshielder (8). Said at least one part of said deshielder (8) can be removed from the housing (300) by exerting a traction force equal or less to 30 N.