diff --git a/timesketch/lib/tasks.py b/timesketch/lib/tasks.py
index a790542353..3b7eaf4c7f 100644
--- a/timesketch/lib/tasks.py
+++ b/timesketch/lib/tasks.py
@@ -939,9 +939,11 @@ def run_csv_jsonl(
         unique_keys = set(current_index_mapping_properties)
 
         try:
-            current_limit = int(opensearch.client.indices.get_settings(index=index_name)[
-                index_name
-            ]["settings"]["index"]["mapping"]["total_fields"]["limit"])
+            current_limit = int(
+                opensearch.client.indices.get_settings(index=index_name)[index_name][
+                    "settings"
+                ]["index"]["mapping"]["total_fields"]["limit"]
+            )
         except KeyError:
             current_limit = 1000
 
@@ -953,7 +955,7 @@ def run_csv_jsonl(
             unique_keys.update(event.keys())
             # Calculating the new limit. Each unique key is counted twice due to
             # the "keayword" type plus a percentage buffer (default 20%).
-            new_limit = int((len(unique_keys)*2) * (1 + limit_buffer_percentage))
+            new_limit = int((len(unique_keys) * 2) * (1 + limit_buffer_percentage))
             # To prevent mapping explosions we still check against an upper
             # mapping limit set in timesketch.conf (default: 2000).
             if new_limit > upper_mapping_limit:
@@ -965,12 +967,15 @@ def run_csv_jsonl(
                     "data or adjust OPENSEARCH_MAPPING_UPPER_LIMIT."
                 )
                 logger.error(error_msg)
-                _set_datasource_status(timeline_id, file_path, "fail", error_message=str(error_msg))
+                _set_datasource_status(
+                    timeline_id, file_path, "fail", error_message=str(error_msg)
+                )
                 return None
 
             if new_limit > current_limit:
                 opensearch.client.indices.put_settings(
-                    index=index_name, body={"index.mapping.total_fields.limit": new_limit}
+                    index=index_name,
+                    body={"index.mapping.total_fields.limit": new_limit},
                 )
                 logger.info(
                     "OpenSearch index [%s] mapping limit increased to: %d",
@@ -986,7 +991,7 @@ def run_csv_jsonl(
         results = opensearch.flush_queued_events()
 
         error_container = results.get("error_container", {})
-        error_count = len(error_container.get(index_name, {}).get('errors', []))
+        error_count = len(error_container.get(index_name, {}).get("errors", []))
         error_msg = get_import_errors(
             error_container=error_container,
             index_name=index_name,
@@ -1004,7 +1009,9 @@ def run_csv_jsonl(
     except Exception as e:  # pylint: disable=broad-except
         # Mark the searchindex and timelines as failed and exit the task
         error_msg = traceback.format_exc()
-        _set_datasource_status(timeline_id, file_path, "fail", error_message=str(error_msg))
+        _set_datasource_status(
+            timeline_id, file_path, "fail", error_message=str(error_msg)
+        )
         logger.error("Error: {0!s}\n{1:s}".format(e, error_msg))
         return None
 
@@ -1026,7 +1033,9 @@ def run_csv_jsonl(
         )
 
     # Set status to ready when done
-    _set_datasource_status(timeline_id, file_path, "ready", error_message=str(error_msg))
+    _set_datasource_status(
+        timeline_id, file_path, "ready", error_message=str(error_msg)
+    )
 
     return index_name