diff --git a/lib/setup.php b/lib/setup.php
index 9bb6e2df513422994b2ab16c43746e0481476e64..baaa2f7046579abc68b37ae9cced36c3bb7bc988 100644
--- a/lib/setup.php
+++ b/lib/setup.php
@@ -3,7 +3,7 @@
 $hasSQLite = (is_callable('sqlite_open') or class_exists('SQLite3'));
 $hasMySQL = is_callable('mysql_connect');
 $hasPostgreSQL = is_callable('pg_connect');
-$datadir = OC_Config::getValue('datadir', $SERVERROOT.'/data');
+$datadir = OC_Config::getValue('datadirectory', $SERVERROOT.'/data');
 $opts = array(
 	'hasSQLite' => $hasSQLite,
 	'hasMySQL' => $hasMySQL,