diff --git a/bin/dbmodel-files b/bin/dbmodel-files
index 9d13932..6df4de1 100644
--- a/bin/dbmodel-files
+++ b/bin/dbmodel-files
@@ -60,8 +60,8 @@ if (!$loaded) {
 }
 
 $protocol = (!empty($_SERVER[\'HTTPS\']) && $_SERVER[\'HTTPS\'] !== \'off\') ? "https://" : "http://";
-$host = $_SERVER[\'HTTP_HOST\'];
-$uri = $_SERVER[\'REQUEST_URI\']; // obsahuje aj query string
+$host = $_SERVER[\'HTTP_HOST\'] ?? \'localhost\';
+$uri = $_SERVER[\'REQUEST_URI\'] ?? \'\'; // obsahuje aj query string
 
 define(\'URL_PREFIX\', $protocol.$host.str_replace(basename($_SERVER[\'SCRIPT_NAME\']), \'\', $_SERVER[\'SCRIPT_NAME\']));
 ');