diff --git a/plat/allwinner/common/include/platform_def.h b/plat/allwinner/common/include/platform_def.h
index fa0c0ab..e6ca601 100644
--- a/plat/allwinner/common/include/platform_def.h
+++ b/plat/allwinner/common/include/platform_def.h
@@ -52,8 +52,8 @@
 #define CACHE_WRITEBACK_SHIFT		6
 #define CACHE_WRITEBACK_GRANULE		(1 << CACHE_WRITEBACK_SHIFT)
 
-#define MAX_STATIC_MMAP_REGIONS		5
-#define MAX_MMAP_REGIONS		(3 + MAX_STATIC_MMAP_REGIONS)
+#define MAX_STATIC_MMAP_REGIONS		4
+#define MAX_MMAP_REGIONS		(5 + MAX_STATIC_MMAP_REGIONS)
 
 #define PLAT_CSS_SCP_COM_SHARED_MEM_BASE \
 	(SUNXI_SRAM_A2_BASE + SUNXI_SRAM_A2_SIZE - 0x200)