diff --git a/src/spikeinterface/extractors/neoextractors/tdt.py b/src/spikeinterface/extractors/neoextractors/tdt.py
index a0d383ed1f..11c189bf34 100644
--- a/src/spikeinterface/extractors/neoextractors/tdt.py
+++ b/src/spikeinterface/extractors/neoextractors/tdt.py
@@ -17,7 +17,7 @@ class TdtRecordingExtractor(NeoBaseRecordingExtractor):
         The folder path to the tdt folder.
     stream_id: str or None, default: None
         If there are several streams, specify the stream id you want to load.
-    stream_name: str, default: None
+    stream_name: str or None, default: None
         If there are several streams, specify the stream name you want to load.
     all_annotations: bool, default: False
         Load exhaustively all annotations from neo.