diff --git a/config/config.sample.php b/config/config.sample.php
index 30bc5ef4f188b..c13965e8e9247 100644
--- a/config/config.sample.php
+++ b/config/config.sample.php
@@ -470,6 +470,8 @@
 
 /**
  * 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``
  */