A facing element (10) for reinforced soil structure comprising: —first face (12) comprising at least a connecting member (14) configured to connect to said facing element at least one reinforcement member intended to reinforce the reinforced soil, —a second face (16) on which at least a protective membrane is intended to be applied, said second face is opposed to the first face, said second face has an essentially plane surface and comprises at least a fixing portion, the fixing portion comprising: —a contact surface (18) projecting from the plane surface of the second face, —a fastening element (20) anchored in the facing element and—a tightening element (22) engageable with the fastening element so as to fix the protective membrane between said tightening element and said contact surface.