diff --git a/docker-compose.yml b/docker-compose.yml
index cf9c2b6..9cf0842 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -10,6 +10,7 @@
         driver: json-file
       environment:
         - USER_ID=${OPENHAB_USER_ID}
+        - GROUP_ID=${OPENHAB_GROUP_ID}
         - TZ=${TZ}
         - LC_ALL=${OPENHAB_LANG}
         - LANG=${OPENHAB_LANG}
diff --git a/openhab.conf.example b/openhab.conf.example
index e5950ea..6c7be46 100644
--- a/openhab.conf.example
+++ b/openhab.conf.example
@@ -9,9 +9,12 @@
 
 # user configuration
 # http://docs.openhab.org/installation/docker.html
-# please add user like UID:GID
+# please add users ID
 OPENHAB_USER_ID=1000
 
+# group ID
+OPENHAB_GROUP_ID=1000
+
 # network configuration
 OPENHAB_HTTP_BIND=127.0.0.1
 OPENHAB_HTTP_PORT=8080