In any system created by the Information and Communication Technology (ICT) man is main actor. From conception to system discard, man is the system designer, system developer, system user and man is affect by the system, positively or negatively. Although man is the main actor, several systems engineering methods do not include the human in the system development. Given the cost involved in system changes after understand its requirements; we must include the humanism already in system requirements elicitation. This requirements engineering process is a system inside the system to be treated, a system where the components are human activities. This paper propose the use of soft system approach to this process, as a way to identify human requirements for reduce the discrepancy between the expected systems features and the ones that will be perceived.