diff --git a/controllers/api_controller.go b/controllers/api_controller.go
index 0179423ee..671351b8b 100644
--- a/controllers/api_controller.go
+++ b/controllers/api_controller.go
@@ -379,7 +379,7 @@ func (c *ApiController) GetPrintMsg(dataMap map[string]interface{}) (data, errCo
 		jsonEncoder := json.NewEncoder(bf)
 		jsonEncoder.SetEscapeHTML(false)
 		if err2 := jsonEncoder.Encode(printMsg); err2 == nil {
-			data = bf.String()
+			data = strings.Replace(bf.String(), "\n", "", strings.LastIndex(bf.String(), "\n"))
 		} else {
 			return "", model.ErrCodeGeneralFailed, err
 		}