diff --git a/docker/roundcube/rootfs/etc/roundcubemail/kolab_files.inc.php b/docker/roundcube/rootfs/etc/roundcubemail/kolab_files.inc.php
index 3ba79bed..d67cb373 100644
--- a/docker/roundcube/rootfs/etc/roundcubemail/kolab_files.inc.php
+++ b/docker/roundcube/rootfs/etc/roundcubemail/kolab_files.inc.php
@@ -1,29 +1,30 @@
 <?php
 
 // URL of kolab-chwala installation
 $config['kolab_files_url'] = 'https://' . ($_SERVER["HTTP_HOST"] ?? null) . '/chwala/';
-$config['kolab_files_server_url'] = 'http://127.0.0.1/chwala/';
+// This is how the plugin does chwala api requests on the server
+$config['kolab_files_server_url'] = '';
 
 // List of files list columns. Available are: name, size, mtime, type
 $config['kolab_files_list_cols'] = array('name', 'mtime', 'size');
 
 // Name of the column to sort files list by
 $config['kolab_files_sort_col'] = 'name';
 
 // Order of the files list sort
 $config['kolab_files_sort_order'] = 'asc';
 
 // Number of concurent requests for searching and collections listing. Default: 1
 $config['kolab_files_search_threads'] = 1;
 
 // LDAP addressbook that would be searched for user names autocomplete.
 // That should be an array refering to the $config['ldap_public'] array key
 // or complete addressbook configuration array.
 $config['kolab_files_users_source'] = 'kolab_addressbook';
 
 // The LDAP attribute which will be used as ACL user identifier
 $config['kolab_files_users_field'] = 'mail';
 
 // The LDAP search filter will be combined with search queries
 $config['kolab_files_users_filter'] = '';
 ?>