diff --git a/voice_recognition.py b/voice_recognition.py
index fe408e7..b5676af 100644
--- a/voice_recognition.py
+++ b/voice_recognition.py
@@ -115,9 +115,10 @@ class SRBuffer(voice_recv.AudioSink):
 
     def write(self, user, data) -> None:
         logger.info("User %s", user)
-        self.wavewriter[str(user.id)][0].writeframes(data.pcm)
-        self.wavewriter[str(user.id)][1] = time.time_ns()
-        self.wavewriter[str(user.id)][2] = True
+        if user:
+            self.wavewriter[str(user.id)][0].writeframes(data.pcm)
+            self.wavewriter[str(user.id)][1] = time.time_ns()
+            self.wavewriter[str(user.id)][2] = True
 
     def cleanup(self) -> None:
         try: