diff --git a/src/Symfony/Bridge/Monolog/Handler/SwiftMailerHandler.php b/src/Symfony/Bridge/Monolog/Handler/SwiftMailerHandler.php
index fcbd98ac7dc6..c912614a2abb 100644
--- a/src/Symfony/Bridge/Monolog/Handler/SwiftMailerHandler.php
+++ b/src/Symfony/Bridge/Monolog/Handler/SwiftMailerHandler.php
@@ -59,6 +59,14 @@ protected function send($content, array $records)
         }
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function reset()
+    {
+        $this->flushMemorySpool();
+    }
+
     /**
      * Flushes the mail queue if a memory spool is used.
      */