diff --git a/src/mame/drivers/circusc.c b/src/mame/drivers/circusc.c
index 799f1ac8ff2..fc5a3ea2974 100644
--- a/src/mame/drivers/circusc.c
+++ b/src/mame/drivers/circusc.c
@@ -324,7 +324,7 @@ static DISCRETE_SOUND_START( circusc )
 
 	DISCRETE_INPUTX_STREAM(NODE_01, 0, 1.0, 0)
 	DISCRETE_INPUTX_STREAM(NODE_02, 1, 1.0, 0)
-	DISCRETE_INPUTX_STREAM(NODE_03, 1, 2.0, 0) // DAC 0..32767, multiply by 2
+	DISCRETE_INPUTX_STREAM(NODE_03, 2, 2.0, 0) // DAC 0..32767, multiply by 2
 
 	DISCRETE_INPUT_DATA(NODE_05)
 	DISCRETE_INPUT_DATA(NODE_06)