diff --git a/plat/hisilicon/poplar/include/platform_def.h b/plat/hisilicon/poplar/include/platform_def.h
index 805c152..8e8f009 100644
--- a/plat/hisilicon/poplar/include/platform_def.h
+++ b/plat/hisilicon/poplar/include/platform_def.h
@@ -122,7 +122,7 @@
 #define PLAT_POPLAR_NS_IMAGE_OFFSET	0x37000000
 
 /* Page table and MMU setup constants */
-#define ADDR_SPACE_SIZE			(1ull << 32)
+#define ADDR_SPACE_SIZE			(1ULL << 32)
 #define MAX_XLAT_TABLES			(4)
 #define MAX_MMAP_REGIONS		(16)