diff --git a/hwe/j_install_db.php b/hwe/j_install_db.php
index 66789a29..6a35917c 100644
--- a/hwe/j_install_db.php
+++ b/hwe/j_install_db.php
@@ -63,10 +63,10 @@ $db->addHook('run_failed', function(){
     ]);
 });
 
-$mysqli_obj = $db->get();
-
 //unset db object
+$mysqli_obj = $db->get();
 unset($mysqli_obj);
+$db->disconnect();
 unset($db);