diff --git a/meta-ast2400/recipes-bsp/u-boot/files/fw_env.config b/meta-ast2400/recipes-bsp/u-boot/files/fw_env.config
index 78c9466..b303722 100644
--- a/meta-ast2400/recipes-bsp/u-boot/files/fw_env.config
+++ b/meta-ast2400/recipes-bsp/u-boot/files/fw_env.config
@@ -13,7 +13,8 @@
 # MTD SPI-dataflash example
 # MTD device name	Device offset	Env. size	Flash sector size	Number of sectors
 #/dev/mtd2		0x00000		0x20000
-/dev/mtd/u-boot-env	0x00000		0x20000
+/dev/mtd/u-boot-env	0x00000		0x10000
+/dev/mtd/u-boot-env	0x10000		0x10000
 #/dev/mtd5		0x4200		0x4200
 #/dev/mtd6		0x4200		0x4200
 
diff --git a/meta-ast2500/recipes-bsp/u-boot/files/fw_env.config b/meta-ast2500/recipes-bsp/u-boot/files/fw_env.config
index 78c9466..b303722 100644
--- a/meta-ast2500/recipes-bsp/u-boot/files/fw_env.config
+++ b/meta-ast2500/recipes-bsp/u-boot/files/fw_env.config
@@ -13,7 +13,8 @@
 # MTD SPI-dataflash example
 # MTD device name	Device offset	Env. size	Flash sector size	Number of sectors
 #/dev/mtd2		0x00000		0x20000
-/dev/mtd/u-boot-env	0x00000		0x20000
+/dev/mtd/u-boot-env	0x00000		0x10000
+/dev/mtd/u-boot-env	0x10000		0x10000
 #/dev/mtd5		0x4200		0x4200
 #/dev/mtd6		0x4200		0x4200