diff --git a/docs/tech/index.txt b/docs/tech/index.txt
index 7b8e1ff1aa..0bdb6c923a 100644
--- a/docs/tech/index.txt
+++ b/docs/tech/index.txt
@@ -1 +1 @@
-1	How to add a new sample
+TN0001   How to add a new sample