diff --git a/install_minimal/upgrades/airtime-1.9.0/airtime-upgrade.php b/install_minimal/upgrades/airtime-1.9.0/airtime-upgrade.php
index f03469848..1127b23bf 100644
--- a/install_minimal/upgrades/airtime-1.9.0/airtime-upgrade.php
+++ b/install_minimal/upgrades/airtime-1.9.0/airtime-upgrade.php
@@ -655,6 +655,7 @@ class Airtime190Upgrade{
             }
             else {
                 $db_file->setDbDirectory($link_dir_id);
+                $db_file->save();
             }
         }
     }