diff --git a/rfc/0004_ws2p_v1.md b/rfc/0004_ws2p_v1.md
index 4b32f9c9cb855ebc3d5fde003d59a67e98fc83e1..80eb08deba67c678a40b5652711d3e6c9e8d3182 100644
--- a/rfc/0004_ws2p_v1.md
+++ b/rfc/0004_ws2p_v1.md
@@ -5,7 +5,7 @@ This document details the current specifications of ws2p v1 as they are already
 ## Contents
 
 * [Contents](#contents)
-* [What is WS2P ?](#what-is-ws2p-?)
+* [What is WS2P ?](#what-is-ws2p-)
 * [WS2P Endpoints](#ws2p-endpoints)
   * [Endpoint format](#endpoint-format)
   * [Getting endpoints from other Duniter nodes](#getting-endpoints-from-other-duniter-nodes)