diff --git a/weboob/capabilities/audiostream.py b/weboob/capabilities/audiostream.py
index 70939264..3a353e1a 100644
--- a/weboob/capabilities/audiostream.py
+++ b/weboob/capabilities/audiostream.py
@@ -59,7 +59,7 @@ class CapAudioStream(CapAudio):
         """
         Get an audio stream
 
-        :param pattern: pattern to search on
+        :param _id: Audiostream ID
         :type id: str
         :rtype: :class:`BaseAudioStream`
         """