diff --git a/plat/nvidia/tegra/soc/t186/plat_setup.c b/plat/nvidia/tegra/soc/t186/plat_setup.c
index bbd19c1..bd6d764 100644
--- a/plat/nvidia/tegra/soc/t186/plat_setup.c
+++ b/plat/nvidia/tegra/soc/t186/plat_setup.c
@@ -40,7 +40,7 @@
  * the number of power domains at the highest power level.
  *******************************************************************************
  */
-const uint8_t tegra_power_domain_tree_desc[] = {
+static const uint8_t tegra_power_domain_tree_desc[] = {
 	/* No of root nodes */
 	1,
 	/* No of clusters */