diff --git a/admin-guide/configuration/monitoring/icinga2.md b/admin-guide/configuration/monitoring/icinga2.md
index 2faf74be..86e4f7d5 100644
--- a/admin-guide/configuration/monitoring/icinga2.md
+++ b/admin-guide/configuration/monitoring/icinga2.md
@@ -250,6 +250,7 @@ Note if you want to reference the hostname, you might use a macro, e.g.:
 ```
     http_vhost: '$host.name$'
 ```
+Note that macros only work for check command arguments.
 
 The actual service name is up to you, it only needs to be unique.