diff --git a/plat/rockchip/common/drivers/parameter/ddr_parameter.h b/plat/rockchip/common/drivers/parameter/ddr_parameter.h
index 61349c4..25c93a1 100644
--- a/plat/rockchip/common/drivers/parameter/ddr_parameter.h
+++ b/plat/rockchip/common/drivers/parameter/ddr_parameter.h
@@ -35,8 +35,8 @@
 	uint64_t ns_top[DDR_REGION_NR_MAX];
 
 	uint32_t s_nr;
-	uint64_t s_base[DDR_REGION_NR_MAX];
-	uint64_t s_top[DDR_REGION_NR_MAX];
+	uint64_t s_base[DDR_REGION_NR_MAX + 1];
+	uint64_t s_top[DDR_REGION_NR_MAX + 1];
 };
 
 struct param_ddr_usage ddr_region_usage_parse(uint64_t addr, uint64_t max_mb);