diff --git a/doc/report/figures/fsm/full_mgm2_agent.gv b/doc/report/figures/fsm/full_mgm2_agent.gv
index ab51fc721ba78d56163d2f2c33a00cdb3cbd59ac..85eb010fef04970648fab9709097d6078667194d 100644
--- a/doc/report/figures/fsm/full_mgm2_agent.gv
+++ b/doc/report/figures/fsm/full_mgm2_agent.gv
@@ -39,6 +39,10 @@ digraph finite_state_machine {
     stash
     "];
 
+    WaitingRoleAssignment -> WaitingRoleAssignment [label = "neighbour : InformDelta(d) =>
+    stash
+    "];
+
     WaitingRoleAssignment -> OffererWaitingValues  [ label = "self : DetermineSubset(true) =>
     unstashall
     "];
diff --git a/src/main/scala/org/scadcop/solver/decentralized/mgm2/AgentBehaviour.scala b/src/main/scala/org/scadcop/solver/decentralized/mgm2/AgentBehaviour.scala
index e1904d3aee79259f7b0526d4fecb3c1ecb1b9a5e..3ec17e6749413103825d7f6f800773c43e13beb3 100644
--- a/src/main/scala/org/scadcop/solver/decentralized/mgm2/AgentBehaviour.scala
+++ b/src/main/scala/org/scadcop/solver/decentralized/mgm2/AgentBehaviour.scala
@@ -104,6 +104,11 @@ class AgentBehaviour(variable: Variable,
   */
   when(WaitingForRole){
 
+    case Event(InformDelta(_), mind) => {
+      stash
+      stay using mind
+    }
+
     case Event(MakeOffer(_), mind) => {
       stash
       stay using mind