diff --git a/python/paddle/distributed/auto_parallel/tuner/recorder.py b/python/paddle/distributed/auto_parallel/tuner/recorder.py
index de3c9cb84295b9e6aab9c9f929d3e1dfcc19be4d..4d088379d8b3b749cd875b18291fb5c743fc0e33 100644
--- a/python/paddle/distributed/auto_parallel/tuner/recorder.py
+++ b/python/paddle/distributed/auto_parallel/tuner/recorder.py
@@ -70,7 +70,7 @@ class MetricRecords(object):
     def __init__(self, direction="min"):
         if direction not in {"min", "max"}:
             raise ValueError(
-                "direction should be one of {min, max}, but got: {}.".format(
+                "direction should be one of {{min, max}}, but got: {}.".format(
                     direction))
         self._direction = direction
         self._records = {}