The view of foreign market commitment in internationalization process is constructed on the assumption of firms’ knowledge seeking. Uncertainty is reduced by knowledge grounding foreign market commitment. Firms know that they do not know and seek for knowledge through experience or interactions. Incrementality hold stable market and knowledge change. The paper stands on the view that firms do not know that they do not know. It raises the simple question of if international firms’ can really reach knowledge on future why then do they always face with critical problems. Different to the view in internationalization process that firms ‘know what they do not know’; this paper is concerned with the unknown. It discuss that firms’ in their foreign market do not know that they do not know and thereforetheir commitment always face with crises when the market change is drastic. With this theoretical assumption paper presents one case study. The process of internationalization of a Swedish firm is analysed to examine the connection between the knowledge and commitment.