diff --git a/config/openedx/templates/lms.env.json.templ b/config/openedx/templates/lms.env.json.templ
index 42e8ac1..f08fc27 100644
--- a/config/openedx/templates/lms.env.json.templ
+++ b/config/openedx/templates/lms.env.json.templ
@@ -14,6 +14,7 @@
   "LMS_BASE": "${LMS_HOST}",
   "CELERY_BROKER_HOSTNAME": "rabbitmq",
   "CELERY_BROKER_TRANSPORT": "amqp",
+  "COMMENTS_SERVICE_URL": "http://forum:4567",
   "COMMENTS_SERVICE_KEY": "forumapikey",
   "MEDIA_ROOT": "/openedx/data/uploads/",
   "STATIC_ROOT_BASE": "/openedx/data/staticfiles",