diff --git a/_Sidebar.md b/_Sidebar.md
index de713f9..c5e4ac1 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -15,7 +15,6 @@
 * [Two Expansion Hubs](Using-Two-Expansion-Hubs)
 
 ### [Advanced Topics](Advanced-Topics)
-* [Two Expansion Hubs](Using-Two-Expansion-Hubs)
 * [Control Hub Webcam](Using-an-External-Webcam-with-Control-Hub)
 * [Webcam & USB Hub](Using-an-External-UVC-Camera-and-a-Powered-USB-Hub)
 * [Computer Vision](Using-Computer-Vision-in-FTC)