diff --git a/sdk/responses/response.go b/sdk/responses/response.go
index 8a5ec23..d0c386f 100644
--- a/sdk/responses/response.go
+++ b/sdk/responses/response.go
@@ -110,7 +110,7 @@ func Unmarshal(response AcsResponse, httpResponse *http.Response, format string)
 		return
 	}
 
-	if format != "xml" && format != "text" {
+	if format != "xml" {
 		err = jsoniter.Unmarshal(response.GetHttpContentBytes(), response)
 		if err != nil {
 			return errors.New("json Unmarshal:" + err.Error())