A bracing device for securing at least one facing panel in front of a structure, includes a mounting plate equipped with a bearing face which is planar overall, against which the facing panel can bear, the bearing face having at least one transverse dimension greater than or equal to 30 mm, and a body extending in an axial direction and equipped, at a front end, with a mechanism for securing it to the mounting plate and, at a rear end opposite to the front end, with a mechanism for securing it to the structure.