diff --git a/APIServer.exe b/APIServer.exe
index 8f2ab33..72f5e67 100644
Binary files a/APIServer.exe and b/APIServer.exe differ
diff --git a/ews/ews.go b/ews/ews.go
index 5fe0c69..dbaf69f 100644
--- a/ews/ews.go
+++ b/ews/ews.go
@@ -51,7 +51,7 @@ func (e *EWS) SetUutInfo(cfg cnf.Cfg, logger *log.Logger, host string, addr stri
 	if params["USN"] == "" || params["MAC"] == "" {
 		logger.Printf("[ERR]  %s; %s; %#v; %s\r\n", addr, uri, params, "Missing Parameter USN/MAC.")
 		rst["RESULT"] = "NG"
-		rst["ErrMsg"] = e.SimpleMsgHTML("red", "Invalid Parameters !")
+		rst["ErrMsg"] = "Missing Parameter USN/MAC."
 		return rst
 	}