diff --git a/_Sidebar.md b/_Sidebar.md
index cf20c22..a07a083 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -70,7 +70,7 @@
    * [Microphone Transceiver](Microphone-Transceiver)
    * [Looking Glass](Looking-Glass)
    * [Tools](Tools)
-      * Freq manager
+      * [Freq manager](Freq-manager)
       * [File manager](File-manager)
       * [Signal gen](Signal-Generator)
       * Wave viewer