diff --git a/Developing-extensions.md b/Developing-extensions.md
index 1d49dcd..a09df67 100644
--- a/Developing-extensions.md
+++ b/Developing-extensions.md
@@ -1,4 +1,4 @@
-[Adding to Index](#Official-Extension-Index)
+[Adding to Index](#official-extension-index)
 
 An extension is just a subdirectory in the `extensions` directory.