A locking system for a hatch having a flap movable between a closed position and an open position, in particular a vehicle hatch, comprising: - a first lock movable between a locked configuration preventing the flap from opening and an unlocked configuration allowing the flap to open, - a first actuating member for the first lock configured to move the first lock between the locked configuration and the unlocked configuration, and - a manually operable control member connected to the first actuating member so that movement of the control member causes movement of the first actuating member, the locking system further comprising: - a second lock movable between a locked configuration preventing the flap from opening and an unlocked configuration allowing the flap to open, - a second actuating member for the second lock configured to move the second lock between the locked configuration and the unlocked configuration, and - a transmission member connecting the second actuating member to the first actuating member so that a movement of the first actuating member causes a corresponding movement of the second actuating member, the control member comprising an eccentric having a main axis of rotation and bearing on a control surface of the first actuating member, so that rotation of the eccentric causes the first actuating member to move, passing the first lock from the locked configuration to the unlocked configuration, characterised in that the first actuating member and the second actuating member comprise a first lever and a second lever respectively, the pivoting of which controls the passage between the locked configuration and the unlocked configuration respectively of the first lock and of the second lock, the first lever and the second lever preferably being identical, the first lever having a first secondary axis of rotation (R 1), the first lever being configured so that rotation of the eccentric about the main axis of rotation causes rotation of the first lever about the first secondary axis of rotation (R 1), and unlocking of the first lock. - a first lock movable between a locked configuration preventing the flap from opening and an unlocked configuration allowing the flap to open, - a first actuating member for the first lock configured to move the first lock between the locked configuration and the unlocked configuration, and - a manually operable control member connected to the first actuating member so that movement of the control member causes movement of the first actuating member, the locking system further comprising: - a second lock movable between a locked configuration preventing the flap from opening and an unlocked configuration allowing the flap to open, - a second actuating member for the second lock configured to move the second lock between the locked configuration and the unlocked configuration, and - a transmission member connecting the second actuating member to the first actuating member so that a movement of the first actuating member causes a corresponding movement of the second actuating member, the control member comprising an eccentric having a main axis of rotation and bearing on a control surface of the first actuating member, so that rotation of the eccentric causes the first actuating member to move, passing the first lock from the locked configuration to the unlocked configuration, characterised in that the first actuating member and the second actuating member comprise a first lever and a second lever respectively, the pivoting of which controls the passage between the locked configuration and the unlocked configuration respectively of the first lock and of the second lock, the first lever and the second lever preferably being identical, the first lever having a first secondary axis of rotation (R 1), the first lever being configured so that rotation of the eccentric about the main axis of rotation causes rotation of the first lever about the first secondary axis of rotation (R 1), and unlocking of the first lock.