diff --git a/.env.sample b/.env.sample
index d3e4633..d1bec56 100644
--- a/.env.sample
+++ b/.env.sample
@@ -236,8 +236,10 @@ WRITE_TIMEOUT=0s
 ## Access logs
 #COMPOSE_FILE="$COMPOSE_FILE:compose.access-log.yml"
 
+## Behind a reverse proxy
+#
 # YAML array of subnets from which Traefik's trusts the x-real-ip
-# header.
+# header when behind a reverse proxy.
 #
 # https://doc.traefik.io/traefik/reference/install-configuration/entrypoints/#opt-forwardedHeaders-trustedIPs
 #TRUSTED_IPS="['10.13.12.1']" # 10.13.12.1 is an example