diff --git a/docker-compose.yml b/docker-compose.yml
index 0c62b37..1c69f82 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -8,9 +8,9 @@
       environment:
         - USER_ID=${OPENHAB_USER_ID}
         - TZ=${TZ}
-        - LC_ALL=${OPENHAB_LANG:en_US.UTF-8}
-        - LANG=${OPENHAB_LANG:en_US.UTF-8}
-        - LANGUAGE=${OPENHAB_LANG:en_US.UTF-8}
+        - LC_ALL=${OPENHAB_LANG}
+        - LANG=${OPENHAB_LANG}
+        - LANGUAGE=${OPENHAB_LANG}
       volumes:
         - /etc/localtime:/etc/localtime:ro
         - /etc/timezone:/etc/timezone:ro