diff --git a/_Sidebar.md b/_Sidebar.md
index 2c6afe1..f116194 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -1,6 +1,6 @@
 [Start here](Home)
 
-[**How to collaborate**](How-to-collaborate)
+[**How to collaborate**](How-to-colaborate)
 ## User manual
 * [First steps](First-steps)
 * Intended use and care