diff --git a/docker/roundcube/rootfs/opt/app-root/src/checkconnections.sh b/docker/roundcube/rootfs/opt/app-root/src/checkconnections.sh
index e022c2b5..c8f6c51f 100755
--- a/docker/roundcube/rootfs/opt/app-root/src/checkconnections.sh
+++ b/docker/roundcube/rootfs/opt/app-root/src/checkconnections.sh
@@ -1,101 +1,101 @@
 #!/bin/bash
 
 set -e
 set -x
 
 #Check all connections that roundcube requires. Should probably be a php script.
 #* imap
 #* chwala
 #
 # External access
 # file_api_url
 # kolab_files_url
 # kolab_addressbook_carddav_url
 # calendar_caldav_url
 IMAP_HOST=$(./getconfig.php default_host)
 IMAP_PORT=$(./getconfig.php default_port)
 echo "IMAP : $IMAP_HOST:$IMAP_PORT"
 echo "a01 LOGOUT" | telnet $IMAP_HOST $IMAP_PORT | grep "Connected to imap"
 echo "IMAP is OK"
 
 #TODO smtp
 
 #FIXME in newer mariadb-shell variants there is --dsn, but in older mysql client version there doesn't seem to be something like it
 # MYSQL_DSN=$(./getconfig.php db_dsnw)
 # echo "Mysql : $IMAP_HOST:$IMAP_PORT"
 # mysql --batch 'describe table foobar?'
 # echo "IMAP is OK"
 
 URL=$(./getconfig.php fileapi_wopi_office)
 echo "WOPI office: $URL"
 curl -sD /dev/stderr "$URL/hosting/discovery" -k | grep "<wopi-discovery>"
 echo "WOPI office is OK"
 
 URL=$(./getconfig.php kolab_files_server_url)
 if [[ $URL == "" ]]; then
     URL=$(./getconfig.php kolab_files_url)
 fi
 echo "Chwala url: $URL"
 curl -sD /dev/stderr "$URL/api/" -k | grep "Invalid session"
 echo "Chwala is OK"
 
 if [[ "$(./getconfig.php fileapi_backend)" == "kolabfiles" ]]; then
     URL=$(./getconfig.php fileapi_kolabfiles_baseuri)
     echo "Kolabfiles $URL"
-    # We just try to connect to the api on an path that doesn't require authentication
-    curl -sD /dev/stderr "$URL/login" | grep "Not found"
+    # We expect a 401 if the api call exists in this location (even unauthenticated).
+    curl -s -o /dev/null -w "%{http_code}" $URL/api/v4/fs | grep "401"
     echo "Kolabfiles API is OK"
 fi
 
 
 if [[ "$(./getconfig.php kolab_addressbook_driver)" == "carddav" ]]; then
     # $config['kolab_addressbook_carddav_server'] = "https://" . ($_SERVER["HTTP_HOST"] ?? null) . "/dav";
     URL=$(./getconfig.php kolab_addressbook_carddav_server)
     echo "Carddav $URL"
     curl -sD /dev/stderr -H "Content-Type: application/xml" -X PROPFIND -H "Depth: infinity" --data '<d:propfind xmlns:d="DAV:" xmlns:cs="https://calendarserver.org/ns/"><d:prop><d:resourcetype /><d:displayname /></d:prop></d:propfind>' $URL -k | grep "405 Method Not Allowed"
     echo "Carddav is OK"
 
     #FIXME this is for external access, so we can't test this here
     #FIXME username/host/addressbook substitution
     # $config['kolab_addressbook_carddav_url'] = 'http://%h/dav/addressbooks/%u/%i';
     # URL=$(./getconfig.php kolab_addressbook_carddav_url)
     # echo "Carddav $URL"
     # curl -sD /dev/stderr -H "Content-Type: application/xml" -X PROPFIND -H "Depth: infinity" --data '<d:propfind xmlns:d="DAV:" xmlns:cs="https://calendarserver.org/ns/"><d:prop><d:resourcetype /><d:displayname /></d:prop></d:propfind>' $URL -k
     # echo "Carddav is OK"
 fi
 
 
 if [[ "$(./getconfig.php calendar_driver)" == "caldav" ]]; then
     #$config['calendar_caldav_server'] = "https://" . ($_SERVER["HTTP_HOST"] ?? null) . "/dav";
     URL=$(./getconfig.php calendar_caldav_server)
     echo "Caldav $URL"
     curl -sD /dev/stderr -H "Content-Type: application/xml" -X PROPFIND -H "Depth: infinity" --data '<d:propfind xmlns:d="DAV:" xmlns:cs="https://calendarserver.org/ns/"><d:prop><d:resourcetype /><d:displayname /></d:prop></d:propfind>' $URL -k | grep "405 Method Not Allowed"
     echo "Caldav is OK"
 
     #FIXME this is for external access, so we can't test this here
     #$config['calendar_caldav_url'] = 'http://%h/dav/calendars/%u/%i';
 fi
 
 
 if [[ "$(./getconfig.php tasklist_driver)" == "caldav" ]]; then
     #$config['calendar_caldav_server'] = "https://" . ($_SERVER["HTTP_HOST"] ?? null) . "/dav";
     URL=$(./getconfig.php tasklist_caldav_server)
     echo "Tasklist caldav $URL"
     curl -sD /dev/stderr -H "Content-Type: application/xml" -X PROPFIND -H "Depth: infinity" --data '<d:propfind xmlns:d="DAV:" xmlns:cs="https://calendarserver.org/ns/"><d:prop><d:resourcetype /><d:displayname /></d:prop></d:propfind>' $URL -k | grep "405 Method Not Allowed"
     echo "Tasklist caldav is OK"
 fi
 
 
 if [[ "$(./getconfig.php calendar_driver)" == "caldav" ]]; then
     #$config['calendar_caldav_server'] = "https://" . ($_SERVER["HTTP_HOST"] ?? null) . "/dav";
     URL=$(./getconfig.php calendar_caldav_server)
     echo "Caldav $URL"
     curl -sD /dev/stderr -H "Content-Type: application/xml" -X PROPFIND -H "Depth: infinity" --data '<d:propfind xmlns:d="DAV:" xmlns:cs="https://calendarserver.org/ns/"><d:prop><d:resourcetype /><d:displayname /></d:prop></d:propfind>' $URL -k | grep "405 Method Not Allowed"
     echo "Caldav is OK"
 
     #FIXME this is for external access, so we can't test this here
     #$config['calendar_caldav_url'] = 'http://%h/dav/calendars/%u/%i';
 fi
 
 
 echo "All checks complete"