diff --git a/include/class.error.php b/include/class.error.php
index 7e9ecb8a9cc15cc45d422fd7a13d39278af95091..72909a615e2a61cde374ccdcba9213a80f4e2515 100644
--- a/include/class.error.php
+++ b/include/class.error.php
@@ -27,7 +27,7 @@ class Error extends Exception {
         parent::__construct(__($message));
         $message = str_replace(ROOT_DIR, '(root)/', _S($message));
 
-        if ($ost->getConfig()->getLogLevel() == 3)
+        if ($ost && $ost->getConfig()->getLogLevel() == 3)
             $message .= "\n\n" . $this->getBacktrace();
 
         $ost->logError($this->getTitle(), $message, static::$sendAlert);