diff --git a/install_minimal/upgrades/airtime-2.5.3/StorageQuotaUpgrade.php b/install_minimal/upgrades/airtime-2.5.3/StorageQuotaUpgrade.php
index dbef72e41..56a792f5a 100644
--- a/install_minimal/upgrades/airtime-2.5.3/StorageQuotaUpgrade.php
+++ b/install_minimal/upgrades/airtime-2.5.3/StorageQuotaUpgrade.php
@@ -10,14 +10,11 @@ set_include_path(implode(PATH_SEPARATOR, array(
     realpath(APPLICATION_PATH . '/../library')
 )));
 
-set_include_path(implode(PATH_SEPARATOR, array(
-    get_include_path(),
-    realpath(APPLICATION_PATH . '/../library/propel/runtime/lib')
-)));
-
 //Propel classes.
 set_include_path(APPLICATION_PATH . '/models' . PATH_SEPARATOR . get_include_path());
 
+require_once 'CcMusicDirsQuery.php';
+
 class StorageQuotaUpgrade
 {
     public static function startUpgrade()