diff --git a/apps/emqx/src/emqx_session_router_worker.erl b/apps/emqx/src/emqx_session_router_worker.erl
index dca51a7c3..322f110c0 100644
--- a/apps/emqx/src/emqx_session_router_worker.erl
+++ b/apps/emqx/src/emqx_session_router_worker.erl
@@ -91,6 +91,7 @@ buffer(Worker, STopic, Msg) ->
 init(#{ remote_pid  := RemotePid
       , session_id  := SessionID
       , session_tab := SessionTab}) ->
+    process_flag(trap_exit, true),
     erlang:monitor(process, RemotePid),
     ?tp(ps_worker_started, #{ remote_pid => RemotePid
                             , sid => SessionID }),