diff --git a/relay.py b/relay.py
index 018b6c4..eee5cf7 100644
--- a/relay.py
+++ b/relay.py
@@ -237,7 +237,7 @@ class Relay:
 
     async def _on_speaker_frame(self, pcm_bytes):
         """Receive speaker PCM from bridge, resample, encode Opus, send to ESP32."""
-        if not self.ws or self.ws.closed:
+        if not self.ws or getattr(self.ws, 'closed', False):
             return
         try:
             self._audio_out_count += 1