Abstract: The invention concerns an individualized security document (1) and a method of individualizing a security document. The individualized security document (1) has a number of pages (12 to 15) which are connected together by means of stitching or adhesive. In addition integrated into the security document by means of stitching and adhesive is a single-layer or multi-layer film body (2) which is provided with an individualized optical security element and which is folded in the region of the stitching or adhesive. The fold divides the film body (2) into a first part (21) on which the individualized optical security element is arranged and a second, preferably flap-shaped part (22) which is permanently connected to a plastic body having at least one machine-readable security element, wherein the at least one machine-readable security element has an electronic circuit for RF identification.