diff --git a/include/configs/hi3516av200.h b/include/configs/hi3516av200.h
index fac5730..5d94e69 100644
--- a/include/configs/hi3516av200.h
+++ b/include/configs/hi3516av200.h
@@ -101,7 +101,7 @@
 #define FMC_TEXT_ADRS			(FMC_MEM_BASE)
 
 #define MEM_BASE_DDR			(DDR_MEM_BASE)
-#define CONFIG_SYS_MALLOC_LEN      (CONFIG_ENV_SIZE + 2*1024*1024)
+#define CONFIG_SYS_MALLOC_LEN      (0x40000 + 768*1024)
 /* size in bytes reserved for initial data */
 #define CONFIG_SYS_GBL_DATA_SIZE   128