diff --git a/src/mame/includes/ashnojoe.h b/src/mame/includes/ashnojoe.h
index 7f41d273276..458bc126c00 100644
--- a/src/mame/includes/ashnojoe.h
+++ b/src/mame/includes/ashnojoe.h
@@ -56,6 +56,7 @@ public:
 
 	/* sound-related */
 	uint8_t       m_adpcm_byte;
+	int           m_msm5205_vclk_toggle;
 
 	/* devices */
 	required_device<cpu_device> m_maincpu;