This study examines lecturers' behavioral changes in using a learning management system (LMS) during the COVID-19 pandemic at Tadulako University. This research used a qualitative approach, and the population was lecturers of Tadulako University selected using a purposive sampling technique. Data were collected through observation, interviews, and documentation. Then, the collected data were analyzed using several stages, including data reduction, data presentation, and conclusions. The results showed changes in lecturers' behavior in Tadulako University in using LMS for distance learning. Based on internal factors, the changes can be seen from lecturers' willingness to improve their skill in using the LMS through the internet and YouTube and learn how to use LMS from other lecturers who have mastered it. Based on external factors, changes occurred due to pressure to implement LMS in distance learning as the pandemic worsened. The applicable policies and circular letters require lecturers to use LMS during the COVID-19 pandemic.