diff --git a/digitaldemocratic.conf.sample b/digitaldemocratic.conf.sample
index 05dbee0..a27aed3 100644
--- a/digitaldemocratic.conf.sample
+++ b/digitaldemocratic.conf.sample
@@ -4,7 +4,12 @@ TITLE_SHORT="dd"
 DOMAIN=mydomain.com
 LETSENCRYPT_DNS=
 LETSENCRYPT_EMAIL=
-GANDI_KEY=
+# Generate letsencrypt certificate for root domain
+# Values:
+# - false (default): dont generate certificate for root domain, only for
+#                    subdomains.
+# - true: generate certificate for root domain and subdomains.
+#LETSENCRYPT_DOMAIN_ROOT=false
 
 DB_FOLDER=/opt/digitaldemocratic/db
 DATA_FOLDER=/opt/digitaldemocratic/data