diff --git a/sample.env b/sample.env
index 04e332ef455..2c4732f46e2 100644
--- a/sample.env
+++ b/sample.env
@@ -48,6 +48,7 @@ REDIS_URL=
 # LDAP Login Provider
 #
 # You can enable LDAP authentication by providing values for the variables below.
+# For some documentation, see here: https://github.com/omniauth/omniauth-ldap
 #   LDAP_TITLE="Example-LDAP"
 #   LDAP_SERVER=ldap.example.com
 #   LDAP_PORT=389