diff --git a/plat/allwinner/common/include/platform_def.h b/plat/allwinner/common/include/platform_def.h
index b7cf30f..4f9c00e 100644
--- a/plat/allwinner/common/include/platform_def.h
+++ b/plat/allwinner/common/include/platform_def.h
@@ -27,7 +27,7 @@
 #define CACHE_WRITEBACK_SHIFT		6
 #define CACHE_WRITEBACK_GRANULE		(1 << CACHE_WRITEBACK_SHIFT)
 
-#define MAX_MMAP_REGIONS		(4 + PLATFORM_MMAP_REGIONS)
+#define MAX_MMAP_REGIONS		(3 + PLATFORM_MMAP_REGIONS)
 #define MAX_XLAT_TABLES			1
 
 #define PLAT_MAX_PWR_LVL_STATES		U(2)