diff --git a/src/emu/sound/ymf271.c b/src/emu/sound/ymf271.c
index 2031c607e74..3a5533e0277 100644
--- a/src/emu/sound/ymf271.c
+++ b/src/emu/sound/ymf271.c
@@ -981,6 +981,7 @@ void ymf271_device::sound_stream_update(sound_stream &stream, stream_sample_t **
 					}
 				}
 
+				mixp = &mix[0];
 				update_pcm(j + (3*12), mixp, samples);
 				break;
 			}