diff --git a/doc/source/admin/index.rst b/doc/source/admin/index.rst
index 2190eafeb..5aa1b21b7 100644
--- a/doc/source/admin/index.rst
+++ b/doc/source/admin/index.rst
@@ -16,7 +16,6 @@ Administering Senlin
 ====================
 
 .. toctree::
-
    :maxdepth: 1
 
    authentication