diff --git a/mkdocs.yml b/mkdocs.yml
index a11c736a7ad3b960dc5ccf178c8e11d9744eef40..3d335549312d4a55f5ba79162baa973aeaa5d454 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -26,7 +26,7 @@ theme:
   toc:
     include: true  
     collapse: true   
-    depth: 2    
+    depth: 1    
   # Don't include MkDocs' JavaScript
   #include_search_page: false
   #search_index_only: true