diff --git a/MD_JAIL.php b/MD_JAIL.php
index d8a1d9b..681c7d3 100644
--- a/MD_JAIL.php
+++ b/MD_JAIL.php
@@ -208,6 +208,7 @@ final class MD_JAIL {
 
             $this->_status = self::STATUS_SPECIFIED;
             $this->__destruct();
+            return;
         }
 
         $this->_apply_memory_limit();