A hydraulic accumulator has a first housing shell (2) and a second housing shell (3). The opening edges (5, 6) of the shells overlap in relation to the longitudinal axis (4) of the hydraulic accumulator (1) such that they define a partial volume of the hydraulic accumulator (1). The accumulator also has a separating element (7) separating inner working chambers (9, 10) from each other within the accumulator housing (8) in a medium-tight manner. The housing is formed by the housing shells (2, 3). The opening edge (5) of the radially outer-lying housing shell (2) is positively coupled to the circumference of the radially inner-lying housing shell (3) by reshaping.