diff --git a/icshttp/handler.go b/icshttp/handler.go
index 0913ac2..da992b7 100644
--- a/icshttp/handler.go
+++ b/icshttp/handler.go
@@ -184,7 +184,7 @@ func (s *ScenarioSession) BOTPFunc(w http.ResponseWriter, r *http.Request) {
 		response.ResultCode = 200
 		response.Token = request.Token
 		response.Action = "END"
-		response.AnounceMents = ""
+		response.AnounceMents = "잘 이해하지 못했습니다. 다시 말씀해주세요."
 		response.Data.BargeIn = ""
 		response.Data.RecodingFile = ""
 		response.Data.SttMaxTime = 10