diff --git a/rfc/0004_ws2p_v1.md b/rfc/0004_ws2p_v1.md
index 474dcb0b4cdd9aa012d982b5928b946e40f5416b..7bf802d25c6e1368aa359e7028ccc02d2de561e7 100644
--- a/rfc/0004_ws2p_v1.md
+++ b/rfc/0004_ws2p_v1.md
@@ -303,7 +303,7 @@ PUBKEY := public key of the issuer node of this head
 BLOCKSTAMP = `blockNumber-Hash`  
 WS2PID := unique identifier of the ws2p endpoint  
 SOFTWARE = `duniter-ts`  
-SOFT_VERSION = `X.Y.Z` (for example `1.6.14`)  
+SOFT_VERSION = `X.Y.Z-suffix` (for example `1.6.14-beta`)  
 POW_PREFIX := nonce prefix for proof of work (manually fixed by the user)  
 FREE_MEMBER_ROOM := Number of incoming connection requests that can still be accepted from member nodes (FREE_MIROR_ROOM - Number of incoming connections established by non-priority mirror nodes).  
 FREE_MIROR_ROOM := An integer indicating the number of incoming connections that the node can still receive.