diff --git a/src/Monolog/ErrorHandler.php b/src/Monolog/ErrorHandler.php
index c8923354..db72e163 100644
--- a/src/Monolog/ErrorHandler.php
+++ b/src/Monolog/ErrorHandler.php
@@ -130,6 +130,8 @@ class ErrorHandler
         if ($this->previousExceptionHandler) {
             call_user_func($this->previousExceptionHandler, $e);
         }
+
+        exit(255);
     }
 
     /**