diff --git a/plat/allwinner/common/include/platform_def.h b/plat/allwinner/common/include/platform_def.h
index 4de8b0b..32a7c04 100644
--- a/plat/allwinner/common/include/platform_def.h
+++ b/plat/allwinner/common/include/platform_def.h
@@ -40,17 +40,17 @@
 #define PLAT_MAX_OFF_STATE		U(2)
 
 #define PLAT_MAX_PWR_LVL		U(2)
-#define PLAT_NUM_PWR_DOMAINS		(1 + \
+#define PLAT_NUM_PWR_DOMAINS		(U(1) + \
 					 PLATFORM_CLUSTER_COUNT + \
 					 PLATFORM_CORE_COUNT)
 
 #define PLAT_PHY_ADDR_SPACE_SIZE	(1ULL << 32)
 #define PLAT_VIRT_ADDR_SPACE_SIZE	(1ULL << 28)
 
-#define PLATFORM_CLUSTER_COUNT		1
+#define PLATFORM_CLUSTER_COUNT		U(1)
 #define PLATFORM_CORE_COUNT		(PLATFORM_CLUSTER_COUNT * \
 					 PLATFORM_MAX_CPUS_PER_CLUSTER)
-#define PLATFORM_MAX_CPUS_PER_CLUSTER	4
+#define PLATFORM_MAX_CPUS_PER_CLUSTER	U(4)
 #define PLATFORM_MMAP_REGIONS		4
 #define PLATFORM_STACK_SIZE		(0x1000 / PLATFORM_CORE_COUNT)