diff --git a/reports/ev-2018/images/sprints/lakademy-group.jpg b/reports/ev-2018/images/sprints/lakademy_group.jpg
similarity index 100%
rename from reports/ev-2018/images/sprints/lakademy-group.jpg
rename to reports/ev-2018/images/sprints/lakademy_group.jpg
diff --git a/reports/ev-2018/images/sprints/lakademy-session.jpg b/reports/ev-2018/images/sprints/lakademy_session.jpg
similarity index 100%
rename from reports/ev-2018/images/sprints/lakademy-session.jpg
rename to reports/ev-2018/images/sprints/lakademy_session.jpg