diff --git a/Core/Frameworks/Baikal/Core/Server.php b/Core/Frameworks/Baikal/Core/Server.php
index 2de1e14..32ce8fd 100644
--- a/Core/Frameworks/Baikal/Core/Server.php
+++ b/Core/Frameworks/Baikal/Core/Server.php
@@ -146,7 +146,7 @@ class Server {
             $nodes[] = new \Sabre\CalDAV\CalendarRoot($principalBackend, $calendarBackend);
         }
         if ($this->enableCardDAV) {
-            $carddavBackend = new \Sabre\CardDAV\Backend\PDO($GLOBALS["DB"]->getPDO());
+            $carddavBackend = new \Sabre\CardDAV\Backend\PDO($this->pdo);
             $nodes[] = new \Sabre\CardDAV\AddressBookRoot($principalBackend, $carddavBackend);
         }