Device for locking a timepiece movement

A timepiece including a case comprising a middle, a top part whereof is closed by a bezel and a bottom part whereof is closed by a back, a horological movement mounted against the middle by means of a casing ring,

• wherein the casing ring comprises at least two clippable parts which hold the horological movement, the two parts being inseparable once mounted against the middle when closing the case of the timepiece,
• wherein said two clippable parts respectively comprise at least one male part and one female part arranged such that they are clipped inside one another, said male part comprising a body and a head arranged so as to engage, by interlocking, with a recess in the female part, and the female part further comprises an opening disposed on the top of one of the clippable parts and opening out into the recess for receiving the head.