diff --git a/PROTOCOL.md b/PROTOCOL.md
index fe21ba0..05c4298 100644
--- a/PROTOCOL.md
+++ b/PROTOCOL.md
@@ -200,15 +200,6 @@ Each token has a size defined by the *hash function*, which is `sha512` for this
 
 > For readability purposes, the tokens are sent as their hexadecimal representation ; each token is then a string of 128 characters.
 
-```sequence
-participant Client
-participant Server
-Client->Server: x1,x2
-Note right of Server : unscramble x1,x2
-Note right of Server : x1 valid, store x2
-Server->Client: Success
-```
-
 ### 1. Send the request
 
 This case is the default where $i$ is far from $1$ so there is no key generation or synchronization to do.