diff --git a/plat/nvidia/tegra/common/tegra_bl31_setup.c b/plat/nvidia/tegra/common/tegra_bl31_setup.c
index 26256c2..e92960c 100644
--- a/plat/nvidia/tegra/common/tegra_bl31_setup.c
+++ b/plat/nvidia/tegra/common/tegra_bl31_setup.c
@@ -381,13 +381,15 @@
  ******************************************************************************/
 int32_t bl31_check_ns_address(uint64_t base, uint64_t size_in_bytes)
 {
-	uint64_t end = base + size_in_bytes;
+	uint64_t end = base + size_in_bytes - U(1);
 	int32_t ret = 0;
 
 	/*
 	 * Check if the NS DRAM address is valid
 	 */
-	if ((base < TEGRA_DRAM_BASE) || (end > TEGRA_DRAM_END)) {
+	if ((base < TEGRA_DRAM_BASE) || (base >= TEGRA_DRAM_END) ||
+	    (end > TEGRA_DRAM_END)) {
+
 		ERROR("NS address is out-of-bounds!\n");
 		ret = -EFAULT;
 	}
@@ -396,7 +398,7 @@
 	 * TZDRAM aperture contains the BL31 and BL32 images, so we need
 	 * to check if the NS DRAM range overlaps the TZDRAM aperture.
 	 */
-	if ((base < TZDRAM_END) && (end > tegra_bl31_phys_base)) {
+	if ((base < (uint64_t)TZDRAM_END) && (end > tegra_bl31_phys_base)) {
 		ERROR("NS address overlaps TZDRAM!\n");
 		ret = -ENOTSUP;
 	}