diff --git a/rtcllm/a2a.py b/rtcllm/a2a.py
index 048e4b6..4a15430 100644
--- a/rtcllm/a2a.py
+++ b/rtcllm/a2a.py
@@ -36,7 +36,7 @@ class LLMAudioStreamTrack(AudioStreamTrack):
 
 	def get_audio_bytes(self):
 		if self.cur_iters is None:
-			if not set_cur_audio_iter():
+			if not self.set_cur_audio_iter():
 				return None
 		try:
 			b = next(self.cur_iters)