diff --git a/laborious/workflows/sub_workflows/prediction_process.py b/laborious/workflows/sub_workflows/prediction_process.py
index 3aecce2..10f820c 100644
--- a/laborious/workflows/sub_workflows/prediction_process.py
+++ b/laborious/workflows/sub_workflows/prediction_process.py
@@ -162,7 +162,7 @@ class PredictionProcess():
         await workflow.execute_child_workflow(
             'format_and_export_prediction',
             {
-                **metadata,
+                'metadata': metadata,
                 'path_flag': path_flag,
                 'data': response_data['content'],
                 'prediction_confidence': confidence,