diff --git a/core/maingate.go b/core/maingate.go
index 35e37b5..6200238 100644
--- a/core/maingate.go
+++ b/core/maingate.go
@@ -461,7 +461,9 @@ func (mg *Maingate) RegisterHandlers(ctx context.Context, serveMux *http.ServeMu
 			mg.service().serveHTTP_dev(w, r)
 		})
 	} else {
-		serveMux.HandleFunc(gocommon.MakeHttpHandlerPattern(prefix, "/"), func(w http.ResponseWriter, r *http.Request) {
+		pattern := gocommon.MakeHttpHandlerPattern(prefix, "/")
+		logger.Println("pattern registered :", pattern)
+		serveMux.HandleFunc(pattern, func(w http.ResponseWriter, r *http.Request) {
 			// mg.service()를 요청마다 불러야 함
 			mg.service().serveHTTP(w, r)
 		})