diff --git a/01_4_open_discovery.md b/01_4_open_discovery.md
index ea31de5..28d45e1 100644
--- a/01_4_open_discovery.md
+++ b/01_4_open_discovery.md
@@ -1,4 +1,4 @@
-# Open Discovery
+# 1.4 Open Discovery
 
 ## NISO Open Discovery Initiative
 * Standardisierungsgremium in den USA