Personas is a technique that supports designing and engineering interactive systems with the focus on the end-users. This paper reports from a case study, where we interviewed four software developers about their usage of personas in software development practice. The purpose of was to identify the practices of personas development in the software development industry. How the respondents perceive personas and its use does not always correlate with what is described as best practice in the literature. We found that practitioners are not using personas as stated in the literature but are developing their own practices both in regards to when and how personas are created.