diff --git a/docker/images/config.env b/docker/images/config.env
index cc843cda5..2a4c2d4cd 100644
--- a/docker/images/config.env
+++ b/docker/images/config.env
@@ -35,7 +35,8 @@ PENPOT_SMTP_DEFAULT_REPLY_TO=no-reply@example.com
 # PENPOT_SMTP_TLS=true
 # PENPOT_SMTP_SSL=false
 
-# Flags that enables features on frontend applitation.
+# Feature flags. Right now they are only affect frontend, but in
+# future release they will affect to both backend and frontend.
 PENPOT_FLAGS="enable-registration enable-demo-users"
 
 # Comma separated list of allowed domains to register. Empty to allow all.