diff --git a/qlib/workflow/recorder.py b/qlib/workflow/recorder.py
index b381a914a..4c1ddfdfe 100644
--- a/qlib/workflow/recorder.py
+++ b/qlib/workflow/recorder.py
@@ -225,7 +225,7 @@ class MLflowRecorder(Recorder):
 
     def start_run(self):
         # set the tracking uri
-        mlflow.set_tracking_uri(self.uri)
+        mlflow.set_tracking_uri(self._uri)
         # start the run
         run = mlflow.start_run(self.id, self.experiment_id, self.name)
         # save the run id and artifact_uri