A machine for stuffing a food product in a casing, comprising a clipping unit which is adapted to apply two clips with an intermediate cut at the trailing end of a product introduced in a casing and comprising a device for inserting ties which are supported by a ribbon which moves stepwise, moving progressively the ties, one after the other, to a clipping standby position, in which the tie is available for being engaged by a clip in its motion from the magazine to the closure position, a bar being provided which is adapted to be associated with the tie in its movement from the clipping standby position.