diff --git a/plat/nvidia/tegra/soc/t186/drivers/mce/ari.c b/plat/nvidia/tegra/soc/t186/drivers/mce/ari.c
index 95b8c7b..7f711a7 100644
--- a/plat/nvidia/tegra/soc/t186/drivers/mce/ari.c
+++ b/plat/nvidia/tegra/soc/t186/drivers/mce/ari.c
@@ -483,7 +483,7 @@
 	 * used to enable/disable coresight clock gating.
 	 */
 
-	if ((index > TEGRA_ARI_MISC_CCPLEX_CORESIGHT_CG_CTRL) ||
+	if ((index > TEGRA_ARI_MISC_CCPLEX_EDBGREQ) ||
 		((index == TEGRA_ARI_MISC_CCPLEX_CORESIGHT_CG_CTRL) &&
 		(value > 1))) {
 		ERROR("%s: invalid parameters \n", __func__);