diff --git a/Audio/Chain/Downmix.m b/Audio/Chain/Downmix.m
index 1bb981a48..a8291640e 100644
--- a/Audio/Chain/Downmix.m
+++ b/Audio/Chain/Downmix.m
@@ -149,10 +149,12 @@ static void downmix_to_stereo(const float *inBuffer, int channels, uint32_t conf
 
 static void downmix_to_mono(const float *inBuffer, int channels, uint32_t config, float *outBuffer, size_t count) {
 	float tempBuffer[count * 2];
-	downmix_to_stereo(inBuffer, channels, config, tempBuffer, count);
-	inBuffer = tempBuffer;
-	channels = 2;
-	config = AudioConfigStereo;
+	if(channels > 2 || config != AudioConfigStereo) {
+		downmix_to_stereo(inBuffer, channels, config, tempBuffer, count);
+		inBuffer = tempBuffer;
+		channels = 2;
+		config = AudioConfigStereo;
+	}
 	cblas_scopy((int)count, inBuffer, 2, outBuffer, 1);
 	vDSP_vadd(outBuffer, 1, inBuffer + 1, 2, outBuffer, 1, count);
 }