diff --git a/src/emu/drivers/xtal.h b/src/emu/drivers/xtal.h
index 59863335eaf..dcd53929f36 100644
--- a/src/emu/drivers/xtal.h
+++ b/src/emu/drivers/xtal.h
@@ -78,6 +78,7 @@ enum
 	XTAL_8_664MHz		= 8664000,		/* Touchmaster */
 	XTAL_8_867236MHz	= 8867236,		/* RCA CDP1869 PAL color clock */
 	XTAL_8_867238MHz	= 8867238,		/* ETI-660 */
+	XTAL_9_216MHz		= 9216000,		/* Conitec PROF-180X */
 	XTAL_8_945MHz		= 8945000,		/* Hit Me */
 	XTAL_9_828MHz		= 9828000,		/* Universal PCBs */
 	XTAL_9_8304MHz		= 9830400,		/* Epson PX-8 */