diff --git a/api/tasks/add_document_to_index_task.py b/api/tasks/add_document_to_index_task.py
index 81531c9590..09be661216 100644
--- a/api/tasks/add_document_to_index_task.py
+++ b/api/tasks/add_document_to_index_task.py
@@ -18,9 +18,9 @@ from models.dataset import DocumentSegment
 def add_document_to_index_task(dataset_document_id: str):
     """
     Async Add document to index
-    :param document_id:
+    :param dataset_document_id:
 
-    Usage: add_document_to_index.delay(document_id)
+    Usage: add_document_to_index.delay(dataset_document_id)
     """
     logging.info(click.style("Start add document to index: {}".format(dataset_document_id), fg="green"))
     start_at = time.perf_counter()