diff --git a/disco/voice/playable.py b/disco/voice/playable.py
index 98cbbc2..758b357 100644
--- a/disco/voice/playable.py
+++ b/disco/voice/playable.py
@@ -217,10 +217,9 @@ class BufferedOpusEncoderPlayable(BasePlayable, OpusEncoder, AbstractOpus):
             self.frames.put(self.encode(raw, self.samples_per_frame))
             gevent.idle()
         self.source = None
+        self.frames.put(None)
 
     def next_frame(self):
-        if not self.source:
-            return None
         return self.frames.get()