diff --git a/spice/vd_agent.h b/spice/vd_agent.h
index a150a6f..1c4ebaf 100644
--- a/spice/vd_agent.h
+++ b/spice/vd_agent.h
@@ -72,6 +72,7 @@ enum {
     VD_AGENT_FILE_XFER_START,
     VD_AGENT_FILE_XFER_STATUS,
     VD_AGENT_FILE_XFER_DATA,
+    VD_AGENT_CLIENT_DISCONNECTED,
     VD_AGENT_END_MESSAGE,
 };