diff --git a/doc/FEATURE_SET.md b/doc/FEATURE_SET.md
index 103f132728..87a3c69392 100644
--- a/doc/FEATURE_SET.md
+++ b/doc/FEATURE_SET.md
@@ -123,6 +123,9 @@ The X2AP layer is based on **3GPP 36.423** v14.6.0 and implements the following
 
  - X2 Setup Request
  - X2 Setup Response 
+ - X2 Setup Failure
+ - Handover Request 
+ - Handover Request Acknowledge
 
 ## eNB Advanced Features ##