diff --git a/src/c_dispatch.cpp b/src/c_dispatch.cpp
index fa786b271..ec4571b53 100644
--- a/src/c_dispatch.cpp
+++ b/src/c_dispatch.cpp
@@ -197,7 +197,8 @@ void DWaitingCommand::Serialize(FSerializer &arc)
 {
 	Super::Serialize (arc);
 	arc("command", Command)
-		("ticsleft", TicsLeft);
+		("ticsleft", TicsLeft)
+		("unsafe", IsUnsafe);
 }
 
 DWaitingCommand::DWaitingCommand ()