diff --git a/include/configs/MPC8568MDS.h b/include/configs/MPC8568MDS.h
index 618d537..3734055 100644
--- a/include/configs/MPC8568MDS.h
+++ b/include/configs/MPC8568MDS.h
@@ -206,7 +206,7 @@
 #define CONFIG_SYS_INIT_SP_OFFSET	CONFIG_SYS_GBL_DATA_OFFSET
 
 #define CONFIG_SYS_MONITOR_LEN		(256 * 1024) /* Reserve 256 kB for Mon */
-#define CONFIG_SYS_MALLOC_LEN		(128 * 1024)	/* Reserved for malloc */
+#define CONFIG_SYS_MALLOC_LEN		(512 * 1024)	/* Reserved for malloc */
 
 /* Serial Port */
 #define CONFIG_CONS_INDEX		1
@@ -337,9 +337,9 @@
  * Environment
  */
 #define CONFIG_ENV_IS_IN_FLASH	1
-#define CONFIG_ENV_ADDR		(CONFIG_SYS_MONITOR_BASE + 0x40000)
-#define CONFIG_ENV_SECT_SIZE	0x40000	/* 256K(one sector) for env */
+#define CONFIG_ENV_SECT_SIZE	0x20000	/* 128K(one sector) for env */
 #define CONFIG_ENV_SIZE		0x2000
+#define CONFIG_ENV_ADDR		(CONFIG_SYS_MONITOR_BASE - CONFIG_ENV_SECT_SIZE)
 
 #define CONFIG_LOADS_ECHO	1	/* echo on for serial download */
 #define CONFIG_SYS_LOADS_BAUD_CHANGE	1	/* allow baudrate change */