Management and organizational studies have directed attention towards the continuous change of, and introduction of, management tools such as models and concepts. In this perspective, management appears as a texture of concepts that are interrelated in a multiplicity of ways. To grapple with the expanding space of management concepts, the production of concepts in management has been problematized from a number of perspectives such as semiotics, discourse theory and deconstructive approaches. Most contributors who have demonstrated a frustration over the inability to fix management concepts see this as a flaw of management studies. This paper has two objectives. First, to discuss Gilles Deleuze's theory of language and the concept as a fruitful way of dealing with uncertainty of meaning, and, second, to point out the possibilities rather than the shortcomings of `unfixed' management concepts.