diff --git a/configuration-sample/README.md b/configuration-sample/README.md
index 9f93c32a..7b9d5a90 100644
--- a/configuration-sample/README.md
+++ b/configuration-sample/README.md
@@ -9,6 +9,8 @@ This sample shows
 - How to listen to configuration changes
 - How to test it
 
+See [extension.ts](./src/extension.ts)
+
 # Testing
 
 ## Empty Workspace