diff --git a/rtcllm/aav.py b/rtcllm/aav.py
index 4f38b0e..8119179 100644
--- a/rtcllm/aav.py
+++ b/rtcllm/aav.py
@@ -46,14 +46,14 @@ class MyTrackBase(MediaStreamTrack):
 
 class MyAudioStreamTrack(MyTrackBase):
 	kind = 'audio'
-	def __init__(self, source=None):
-		super().__init__()
+	def __init__(self, source):
+		super().__init__(source=source)
 		self.dumb = AudioStreamTrack()
 		
 class MyVideoStreamTrack(MyTrackBase):
 	kind = 'video'
-	def __init__(self, source=None):
-		super().__init__()
+	def __init__(self, source):
+		super().__init__(source=source)
 		self.dumb = AudioStreamTrack()
 
 """