Disclosed is a cover for a container for receiving enteral nutrition solutions, having a thread which can be brought into engagement with a mating thread of a container for receiving an enteral nutrition solution in order to cover an opening in the container for receiving the enteral nutrition solution, and having a connection piece for the connection of a hose line. An opening device having a first part connected to the cover in a form-fitting and/or force-fitting manner and having a second part which is permanently connected to the first part is arranged on an inner side of the cover. In a starting state of the opening device, the second part of the opening device is fixed to the first part of the opening device by a fixing element and, in an opening state of the device, is movable relative to the first part of the opening device.
