diff --git a/docker-compose-syno-host.yaml b/docker-compose-syno-host.yaml
index ca0af47..d05196c 100644
--- a/docker-compose-syno-host.yaml
+++ b/docker-compose-syno-host.yaml
@@ -5,8 +5,6 @@ services:
     container_name: pihole-unbound
     build:
       context: pihu
-    hostname: ${HOSTNAME:-pihole}
-    domainname: ${DOMAIN_NAME:-pihole.local}
     network_mode: host
     environment:
       - IPv6=${IPv6:-false}
@@ -28,6 +26,7 @@ services:
       - PIHOLE_DNS_=${PIHOLE_DNS_:-127.0.0.1#5335}
       - CORS_HOSTS=${CORS_HOSTS:-pi.hole}
       - ADMIN_EMAIL=${ADMIN_EMAIL}
+      - TEMPERATUREUNIT=${TEMPERATUREUNIT:-c}
     volumes:
       - '${SYN_PATH:-.}/pihole/:/etc/pihole:rw'
       - '${SYN_PATH:-.}/dnsmasq.d/:/etc/dnsmasq.d:rw'