diff --git a/src/emu/machine/8042kbdc.c b/src/emu/machine/8042kbdc.c
index 0caf53e6d01..87653ee63d3 100644
--- a/src/emu/machine/8042kbdc.c
+++ b/src/emu/machine/8042kbdc.c
@@ -484,7 +484,7 @@ WRITE8_HANDLER(kbdc8042_8_w)
 	case 1:
 		kbdc8042.speaker = data;
 #ifdef MESS
-		pc_sh_speaker(data&3);
+		pc_sh_speaker(machine, data&3);
 #endif /* MESS */
 		break;