diff --git a/_data/nav.yml b/_data/nav.yml
index 3d1904083..e3395313a 100644
--- a/_data/nav.yml
+++ b/_data/nav.yml
@@ -471,6 +471,7 @@
     - url: "#Context form buttons"
     - url: "#Form API"
     - url: "#Example configuration"
+  - url: "customsidebar"  
   - url: "toolbarbuttons"
   - url: "typesoftoolbarbuttons"
     pages: