diff --git a/src/mumble/AudioOutput.cpp b/src/mumble/AudioOutput.cpp
index 12c35e015..6031605e9 100644
--- a/src/mumble/AudioOutput.cpp
+++ b/src/mumble/AudioOutput.cpp
@@ -344,6 +344,8 @@ AudioSine *AudioOutput::playSine(float hz, float i, unsigned int frames, float v
 }
 
 void AudioOutput::addFrameToBuffer(ClientPlayer *player, const QByteArray &qbaPacket, unsigned int iSeq) {
+	if (iChannels == 0) 
+		return;
 	qrwlOutputs.lockForRead();
 	AudioOutputSpeech *aop = dynamic_cast<AudioOutputSpeech *>(qmOutputs.value(player));
 	if (! aop) {