diff --git a/base/web/render.go b/base/web/render.go
index 3d8c8e25..4a80fdc5 100644
--- a/base/web/render.go
+++ b/base/web/render.go
@@ -65,6 +65,18 @@ func Render(msg *ice.Message, cmd string, args ...interface{}) {
 		// no output
 
 	default:
+		msg.Set("_option")
+		msg.Set("_handle")
+		msg.Set("_output")
+
+		msg.Set("")
+		msg.Set("sessid")
+		msg.Set("domain")
+		msg.Set("river")
+		msg.Set("storm")
+		msg.Set("cmds")
+		msg.Set("fields")
+
 		if cmd != "" { // [str [arg...]]
 			msg.Echo(kit.Format(cmd, args...))
 		}