diff --git a/_Sidebar.md b/_Sidebar.md
index b9b89a8..15eaa10 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -85,6 +85,7 @@
 * [Compile from source](Compile-firmware)
 * Description of the structure
    * [At first glance](At-first-glance)
+   * [Firmware Architecture](Firmware-Architecture)
    * [Persistent Memory](Persistent-Memory)
 * Tools
    * [make_airlines_db.py](Make-airlines-db)