diff --git a/symfony/swiftmailer-bundle/2.5/config/packages/dev/swiftmailer.yaml b/symfony/swiftmailer-bundle/2.5/config/packages/dev/swiftmailer.yaml
index 31fab6c6..aae8bf90 100644
--- a/symfony/swiftmailer-bundle/2.5/config/packages/dev/swiftmailer.yaml
+++ b/symfony/swiftmailer-bundle/2.5/config/packages/dev/swiftmailer.yaml
@@ -1,2 +1,6 @@
-#swiftmailer:
-    #delivery_address: me@example.com
+# See https://symfony.com/doc/current/email/dev_environment.html
+swiftmailer:
+    # disable the sending of email altogether
+    disable_delivery: true
+    # ... or send all email to a specific address
+    #delivery_addresses: ['me@example.com']