diff --git a/src/mame/includes/senjyo.h b/src/mame/includes/senjyo.h
index 05c4678170d..96db15a8500 100644
--- a/src/mame/includes/senjyo.h
+++ b/src/mame/includes/senjyo.h
@@ -87,6 +87,7 @@ public:
 	virtual void video_start();
 	UINT32 screen_update_senjyo(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
 	INTERRUPT_GEN_MEMBER(senjyo_interrupt);
+	DECLARE_WRITE8_MEMBER(irq_ctrl_w);
 	DECLARE_READ8_MEMBER(pio_pa_r);
 	void draw_bgbitmap(bitmap_ind16 &bitmap,const rectangle &cliprect);
 	void draw_radar(bitmap_ind16 &bitmap,const rectangle &cliprect);