diff --git a/uidoc/book.json b/uidoc/book.json
index 1e736f4ab..2fcb0b3d2 100644
--- a/uidoc/book.json
+++ b/uidoc/book.json
@@ -7,7 +7,7 @@
     ],
     "pluginsConfig": {
         "theme-default": {
-            "showLevel": true
+            "showLevel": false
         },
         "jsfiddle": {
             "type": "script",