Many researches have been conducted with respect to learning styles in technology enhanced learning, especially in the area of adaptive learning. Most of these researches used assumptions about how students with different learning styles behave in a system based on the respective learning style theory. However, most of these theories are developed for traditional learning rather than online learning. In this study, we investigated the behaviour of students in a learning management system and correlated the students' behaviour with their learning style preferences. The resulting correlations confirm that students with different learning styles behave differently in an online course, which gives another evidence for the potential of adaptive learning based on learning styles. Furthermore, our findings can contribute in the development of adaptive systems, making adaptive features more accurate and automatic student modelling more precise by combining the results of this study with the conclusions from literature.