diff --git a/src/emu/sound/ymf271.c b/src/emu/sound/ymf271.c
index d454f5aca1c..ad854be5786 100644
--- a/src/emu/sound/ymf271.c
+++ b/src/emu/sound/ymf271.c
@@ -1452,6 +1452,8 @@ static void ymf271_write_timer(YMF271Chip *chip, int data)
 					{
 						chip->timerA |= (data & 0xff)<<8;
 					}
+					else
+						chip->timerA |= 0x200;
 				}
 				break;