diff --git a/generate_config.sh b/generate_config.sh
index f40862b1..997d831a 100755
--- a/generate_config.sh
+++ b/generate_config.sh
@@ -75,4 +75,7 @@ TZ=${TZ}
 # Fixed project name
 COMPOSE_PROJECT_NAME=mailcow-dockerized
 
+# Additional SAN for the certificate
+ADDITIONAL_SAN=
+
 EOF