diff --git a/roles/kolibri/tasks/install.yml b/roles/kolibri/tasks/install.yml
index 85b63478e..e27a66510 100644
--- a/roles/kolibri/tasks/install.yml
+++ b/roles/kolibri/tasks/install.yml
@@ -28,7 +28,7 @@
     name: "{{ kolibri_user }}"
     groups:
       - "{{ apache_user }}"
-      - disk    # 2023-03-27: IS THIS REALLY NECESSARY?
+      - disk    # 2023-03-27: IS THIS REALLY NECESSARY? Unclear. "Mostly equivalent to root access" according to https://wiki.debian.org/SystemGroups
     state: present
     shell: /bin/false
     system: yes