diff --git a/dashboard/modules/tune/tune_head.py b/dashboard/modules/tune/tune_head.py
index 2c6428d68..2bbd33c25 100644
--- a/dashboard/modules/tune/tune_head.py
+++ b/dashboard/modules/tune/tune_head.py
@@ -61,7 +61,7 @@ class TuneController(dashboard_utils.DashboardHeadModule):
         experiment = req.query["experiment"]
         err, experiment = self.set_experiment(experiment)
         if err:
-            return rest_response(success=False, error=err)
+            return rest_response(success=False, message=err)
         return rest_response(
             success=True, message="Successfully set experiment", **experiment
         )