diff --git a/umn/source/conf.py b/umn/source/conf.py
index eebfc6e..65d6d7c 100644
--- a/umn/source/conf.py
+++ b/umn/source/conf.py
@@ -33,7 +33,7 @@ otcdocs_git_type = 'gitea'
 # Those variables are needed for indexing into OpenSearch
 otcdocs_doc_environment = 'internal'
 otcdocs_doc_link = '/mapreduce-service/umn/'
-otcdocs_doc_title = 'MapReduce Service - User Guide'
+otcdocs_doc_title = 'User Guide'
 otcdocs_doc_type = 'umn'
 otcdocs_service_category = 'big_data'
 otcdocs_service_title = 'MapReduce Service'