diff --git a/otc_metadata/data/documents/rfs-umn.yaml b/otc_metadata/data/documents/rfs-umn.yaml
index f4a72cd6..83f05cdf 100644
--- a/otc_metadata/data/documents/rfs-umn.yaml
+++ b/otc_metadata/data/documents/rfs-umn.yaml
@@ -1,5 +1,6 @@
 ---
 hc_location: usermanual/aos
+pdf_environment: internal
 environment: public
 html_location: docs/rfs/umn
 link: /resource-formation-service/umn/