diff --git a/docker/kolab/utils/07-adjust-base-dns.sh b/docker/kolab/utils/07-adjust-base-dns.sh
index 30b1b759..a633c22b 100755
--- a/docker/kolab/utils/07-adjust-base-dns.sh
+++ b/docker/kolab/utils/07-adjust-base-dns.sh
@@ -1,30 +1,31 @@
 #!/bin/bash
 
 . ./settings.sh
 
 echo "ldap_domain_base_dn: ${domain_base_dn}" >> /etc/imapd.conf
 
 sed -i -r \
     -e "s/^ldap_base: .*$/ldap_base: ${hosted_domain_rootdn}/g" \
     /etc/imapd.conf
 
 sed -i -r \
     -e "s/(\s+)base => '.*',$/\1base => '${hosted_domain_rootdn}',/g" \
     -e "/\\\$mydomain = / a\
 \$myhostname = '${HOSTNAME:-kolab}.${DOMAIN:-mgmt.com}';" \
     -e "s/^base_dn = .*$/base_dn = ${hosted_domain_rootdn}/g" \
     -e "s/^search_base = .*$/search_base = ${hosted_domain_rootdn}/g" \
     -e "s/(\s+)'base_dn'(\s+)=> '.*',/\1'base_dn'\2=> '${hosted_domain_rootdn}',/g" \
     -e "s/(\s+)'search_base_dn'(\s+)=> '.*',/\1'search_base_dn'\2=> '${hosted_domain_rootdn}',/g" \
     -e "s/(\s+)'user_specific'(\s+)=> false,/\1'user_specific'\2=> true,/g" \
     /etc/amavisd/amavisd.conf \
     /etc/kolab-freebusy/config.ini \
     /etc/postfix/ldap/*.cf \
     /etc/roundcubemail/config.inc.php \
+    /etc/roundcubemail/calendar.inc.php \
     /etc/roundcubemail/kolab_auth.inc.php
 
 sed -i -r \
     -e "s/^search_base = .*$/search_base = ${domain_base_dn}/g" \
     /etc/postfix/ldap/mydestination.cf
 
 systemctl restart cyrus-imapd postfix