The invention relates to a device for guiding the bolt rope of a sail. The inventive device (6) comprises two curved jaws (9, 10) which are fixed to one another around a pivot point (11). The first jaw (9) is equipped with an inward-facing extension (12) comprising a flat portion (13) and a recess (14). The second jaw comprises a U-shaped locking buckle which is mounted such that the ends thereof can pivot around a position of equilibrium. According to the invention, when the device is in the closed position, the middle portion of the buckle is engaged in the recess so that the jaws are held together and, when the device is in the open position, the middle portion of the buckle rests on the flat portion of the extension so that the jaws are kept at a distance from one another.