diff --git a/lib/kolab_sync_storage_kolab4.php b/lib/kolab_sync_storage_kolab4.php
--- a/lib/kolab_sync_storage_kolab4.php
+++ b/lib/kolab_sync_storage_kolab4.php
@@ -355,7 +355,7 @@
             'serverId'    => "DAV:{$type}:{$folder->id}",
             'parentId'    => 0, // TODO: Folder hierarchy
             'displayName' => $folder->get_name(),
-            'type'        => $this->type_kolab2activesync($type),
+            'type'        => $this->type_kolab2activesync($folder->default ? "$type.default" : $type),
         ];
     }
 
diff --git a/tests/Sync/FoldersTest.php b/tests/Sync/FoldersTest.php
--- a/tests/Sync/FoldersTest.php
+++ b/tests/Sync/FoldersTest.php
@@ -76,15 +76,15 @@
 
         if ($this->isStorageDriver('kolab4')) {
             $folders = [
-                ['Calendar', Syncroton_Command_FolderSync::FOLDERTYPE_CALENDAR_USER_CREATED],
+                ['Calendar', Syncroton_Command_FolderSync::FOLDERTYPE_CALENDAR],
                 // Note: Kolab 4 with Cyrus DAV uses Addressbook, but Kolab 3 with iRony would use 'Contacts'
-                ['/^(Contacts|Addressbook)$/', Syncroton_Command_FolderSync::FOLDERTYPE_CONTACT_USER_CREATED],
+                ['/^(Contacts|Addressbook)$/', Syncroton_Command_FolderSync::FOLDERTYPE_CONTACT],
                 ['INBOX', Syncroton_Command_FolderSync::FOLDERTYPE_INBOX],
                 ['Drafts', Syncroton_Command_FolderSync::FOLDERTYPE_DRAFTS],
                 ['Sent', Syncroton_Command_FolderSync::FOLDERTYPE_SENTMAIL],
                 ['Trash', Syncroton_Command_FolderSync::FOLDERTYPE_DELETEDITEMS],
                 // Note: For now Kolab 4 uses the same Calendar folder for calendar and tasks
-                ['/^(Tasks|Calendar)$/', Syncroton_Command_FolderSync::FOLDERTYPE_TASK_USER_CREATED],
+                ['/^(Tasks|Calendar)$/', Syncroton_Command_FolderSync::FOLDERTYPE_TASK],
             ];
         }