diff --git a/upgrade.php b/upgrade.php
index 6a20ea471..d6bbd0e4a 100644
--- a/upgrade.php
+++ b/upgrade.php
@@ -505,6 +505,11 @@ REPLACE INTO '.PLUGINS_TABLE.'
       }
     }
 
+    if (!isset($_SESSION['connected_with']))
+    {
+      $_SESSION['connected_with'] = 'pwg_ui';
+    }
+
     // Delete cache data
     include(PHPWG_ROOT_PATH . 'include/cache.class.php');