diff --git a/docs/content/config/security/ssl.md b/docs/content/config/security/ssl.md
index f10aea36..5d843e4a 100644
--- a/docs/content/config/security/ssl.md
+++ b/docs/content/config/security/ssl.md
@@ -44,7 +44,7 @@ Check the following page for more information regarding [postfix and SSL/TLS con
 
 To use the certificate:
 
-* add an `DMS_SSL=self-signed` to your container environment variables
+* add `SSL_TYPE=self-signed` to your container environment variables
 * if a matching certificate (files listed above) is found in `config/ssl`, it will be automatically setup in postfix and courier-imap-ssl. You just have to place them in `config/ssl` folder.
 
 ### Testing certificate