diff --git a/apps/emqx/src/emqx_schema.erl b/apps/emqx/src/emqx_schema.erl
index 478925e8e..379492588 100644
--- a/apps/emqx/src/emqx_schema.erl
+++ b/apps/emqx/src/emqx_schema.erl
@@ -896,7 +896,7 @@ fields("ws_opts") ->
             sc(
                 duration(),
                 #{
-                    default => "24h",
+                    default => "15s",
                     desc => ?DESC(fields_mqtt_quic_listener_idle_timeout)
                 }
             )},