diff --git a/config/config.sample.php b/config/config.sample.php
index 77fd2490a1498..ce242ce362eb7 100644
--- a/config/config.sample.php
+++ b/config/config.sample.php
@@ -493,6 +493,8 @@
 
 /**
  * Enable SMTP class debugging.
+ * NOTE: ``loglevel`` will likely need to be adjusted too. See docs: 
+ *   https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/email_configuration.html#enabling-debug-mode
  *
  * Defaults to ``false``
  */