diff --git a/src/mame/includes/senjyo.h b/src/mame/includes/senjyo.h
index 1b7fabd56c3..96db15a8500 100644
--- a/src/mame/includes/senjyo.h
+++ b/src/mame/includes/senjyo.h
@@ -29,7 +29,6 @@ public:
 		m_palette(*this, "palette"),
 		m_generic_paletteram_8(*this, "paletteram") { }
 
-	int m_int_delay_kludge;
 	UINT8 m_sound_cmd;
 	INT16 *m_single_data;
 	int m_single_rate;
@@ -74,6 +73,7 @@ public:
 	DECLARE_WRITE8_MEMBER(senjyo_volume_w);
 	DECLARE_WRITE_LINE_MEMBER(sound_line_clock);
 	DECLARE_WRITE8_MEMBER(sound_cmd_w);
+	DECLARE_WRITE8_MEMBER(irq_ack_w);
 	DECLARE_DRIVER_INIT(starfora);
 	DECLARE_DRIVER_INIT(senjyo);
 	DECLARE_DRIVER_INIT(starfore);