diff --git a/Readme.md b/Readme.md
index fec3248..8b78304 100644
--- a/Readme.md
+++ b/Readme.md
@@ -6,6 +6,8 @@ usage: `python3 discover.py [-a <action>] [-l] service_dir [service_dir …]`
 
 add label "de.wie-ei.autostart=true" to any service in a docker-compose-file
 
+!! This label is discovered as string, not by parsing Yaml. Commenting will not work!
+
 Examples:
 
 * start services (up -d) `python3 discover.py /srv/services/ /opt/docker/testing/`
@@ -25,4 +27,4 @@ Examples:
 
 ### other actions
 * default action: up -d
-* add argument -a "<compose action>"
\ No newline at end of file
+* add argument -a "<compose action>"