diff --git a/src/mame/includes/thunderx.h b/src/mame/includes/thunderx.h
index 38ba33a28ee..8e42281322a 100644
--- a/src/mame/includes/thunderx.h
+++ b/src/mame/includes/thunderx.h
@@ -52,8 +52,8 @@ public:
 	DECLARE_WRITE8_MEMBER(gbusters_videobank_w);
 	DECLARE_READ8_MEMBER(pmc_r);
 	DECLARE_WRITE8_MEMBER(pmc_w);
+	DECLARE_READ8_MEMBER(_1f98_r);
 	DECLARE_WRITE8_MEMBER(scontra_1f98_w);
-	DECLARE_READ8_MEMBER(thunderx_1f98_r);
 	DECLARE_WRITE8_MEMBER(thunderx_1f98_w);
 	DECLARE_WRITE8_MEMBER(sh_irqtrigger_w);
 	DECLARE_READ8_MEMBER(k052109_051960_r);