diff --git a/src/lighteval/tasks/lighteval_task.py b/src/lighteval/tasks/lighteval_task.py
index 872454bf8..5fc6bda16 100644
--- a/src/lighteval/tasks/lighteval_task.py
+++ b/src/lighteval/tasks/lighteval_task.py
@@ -525,7 +525,7 @@ def load_datasets(tasks: list["LightevalTask"], dataset_loading_processes: int =
 
         if dataset_loading_processes <= 1:
             datasets = [
-                download_dataset_worker(task.dataset_path, task.dataset_config_name, task.trust_dataset)
+                download_dataset_worker((task.dataset_path, task.dataset_config_name, task.trust_dataset))
                 for task in tasks
             ]
         else: