diff --git a/tutor/templates/apps/openedx/config/partials/auth.yml b/tutor/templates/apps/openedx/config/partials/auth.yml
index 2ec64487076..b096873ed05 100644
--- a/tutor/templates/apps/openedx/config/partials/auth.yml
+++ b/tutor/templates/apps/openedx/config/partials/auth.yml
@@ -1,8 +1,7 @@
 SECRET_KEY: "{{ OPENEDX_SECRET_KEY }}"
 AWS_ACCESS_KEY_ID: "{{ OPENEDX_AWS_ACCESS_KEY }}"
 AWS_SECRET_ACCESS_KEY: "{{ OPENEDX_AWS_SECRET_ACCESS_KEY }}"
-CONTENTSTORE: null
-DOC_STORE_CONFIG: null
+DOC_STORE_CONFIG: {}
 {{ patch("openedx-auth") }}
 XQUEUE_INTERFACE:
   django_auth: null
diff --git a/tutor/templates/apps/openedx/settings/partials/common_all.py b/tutor/templates/apps/openedx/settings/partials/common_all.py
index d6a92914e73..8a74c88ea64 100644
--- a/tutor/templates/apps/openedx/settings/partials/common_all.py
+++ b/tutor/templates/apps/openedx/settings/partials/common_all.py
@@ -16,6 +16,7 @@
     "password": None,
     {% endif %}
     "db": "{{ MONGODB_DATABASE }}",
+    "replicaSet": None,
 }
 DOC_STORE_CONFIG = mongodb_parameters
 CONTENTSTORE = {