diff --git a/cms/djangoapps/contentstore/asset_storage_handlers.py b/cms/djangoapps/contentstore/asset_storage_handlers.py
index 281258e03a8d..4858c0e45f67 100644
--- a/cms/djangoapps/contentstore/asset_storage_handlers.py
+++ b/cms/djangoapps/contentstore/asset_storage_handlers.py
@@ -714,7 +714,12 @@ def get_asset_json(display_name, content_type, date, location, thumbnail_locatio
     Helper method for formatting the asset information to send to client.
     '''
     asset_url = StaticContent.serialize_asset_key_with_slash(location)
-    external_url = urljoin(configuration_helpers.get_value('LMS_ROOT_URL', settings.LMS_ROOT_URL), asset_url)
+    lms_root = configuration_helpers.get_value_for_org(
+        location.org,
+        'LMS_ROOT_URL',
+        settings.LMS_ROOT_URL
+    )
+    external_url = urljoin(lms_root, asset_url)
     portable_url = StaticContent.get_static_path_from_location(location)
     usage_locations = [] if usage is None else usage
     return {