diff --git a/defaults/main.yml b/defaults/main.yml
index c7629b1..7f45550 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -71,6 +71,7 @@ nextcloud_ldap_base: "dc={{ openldap_domain | default('example.com') | replace('
 #nextcloud_ldap_group_display_name: ""
 #nextcloud_ldap_email_attribute: ""
 #nextcloud_ldap_group_member_assoc_attr: ""
+#nextcloud_ldap_expert_username_attr: ""
 
 # container
 nextcloud_image: eumau/nextcloud
diff --git a/tasks/main.yml b/tasks/main.yml
index aed610d..de7917c 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -104,6 +104,7 @@
       LDAP_GROUP_DISPLAY_NAME: "{{ nextcloud_ldap_group_display_name | default(omit) }}"
       LDAP_EMAIL_ATTRIBUTE: "{{ nextcloud_ldap_email_attribute | default(omit) }}"
       LDAP_GROUP_MEMBER_ASSOC_ATTR: "{{ nextcloud_ldap_group_member_assoc_attr | default(omit) }}"
+      LDAP_EXPERT_USERNAME_ATTR: "{{ nextcloud_ldap_expert_username_attr | default(omit) }}"
     networks:
       - name: "{{ docker_network }}"
     ports: