diff --git a/extern/YM3812-LLE/fmopl2.c b/extern/YM3812-LLE/fmopl2.c
index 5245f1d50..d1dfed55e 100644
--- a/extern/YM3812-LLE/fmopl2.c
+++ b/extern/YM3812-LLE/fmopl2.c
@@ -1026,7 +1026,7 @@ void FMOPL2_Clock(fmopl2_t *chip)
 
         if (!chip->am)
             tremolo = 0;
-        else if (chip->reg_dv)
+        else if (chip->reg_da)
             tremolo = chip->trem_out >> 2;
         else
             tremolo = chip->trem_out >> 4;