diff --git a/Forum-Sharing-Client.md b/Forum-Sharing-Client.md
index a4e4a0c..de29420 100644
--- a/Forum-Sharing-Client.md
+++ b/Forum-Sharing-Client.md
@@ -32,6 +32,14 @@ The sender sets the forum's visibility to INVISIBLE when sending a leave message
 
 The sender sets the forum's visibility to INVISIBLE when sending an abort message. The recipient sets the forum's visibility to INVISIBLE when receiving an abort message.
 
+### State machine
+
+![state-machine-4](/uploads/373807b51d3ba73d6f49a874b931ef0f/state-machine-4.png)
+
+[state-machine-4.odg](/uploads/4606c2f4b9d7f3c00482bdbf46fec250/state-machine-4.odg)
+
+Aborting from any state returns the session to the START state.
+
 ### Validity policy
 
 * A message is valid if it is well-formed.