diff --git a/x2paddle/utils.py b/x2paddle/utils.py
index 192d84dba8552d9e8b5671a918ddd252ecf9d2d8..c3a6d1449867288d8c3df45d9121e518e538e369 100644
--- a/x2paddle/utils.py
+++ b/x2paddle/utils.py
@@ -52,7 +52,7 @@ class ConverterCheck(threading.Thread):
     """
 
     def __init__(self,
-                 task="onnx",
+                 task="ONNX",
                  time_info=None,
                  convert_state=None,
                  lite_state=None,