diff --git a/README.md b/README.md
index 43021837..0cd895f9 100644
--- a/README.md
+++ b/README.md
@@ -88,14 +88,15 @@ Example:
 * ENABLE_POP3
   * *empty* (default) => POP3 service disabled
   * 1 => Enables POP3 service
+* SMTP_ONLY
+  * *empty* (default) => courier daemons might start
+  * *1 => do not launch any courier daemons (imap, pop3)
 * SA_TAG
   * *2.0* (default) => add spam info headers if at, or above that level
 * SA_TAG2
   * *6.31* (default) => add 'spam detected' headers at that level
 * SA_KILL
   * *6.31* (default) => triggers spam evasive actions)
-* SMTP_ONLY
-  * do not launch any courier daemons (imap, pop3)
 
 Please read [how the container starts](https://github.com/tomav/docker-mailserver/blob/master/start-mailserver.sh) to understand what's expected.