diff --git a/target/linux/lantiq/files/arch/mips/boot/dts/lantiq/vr9_zyxel_p-2812hnu-f1.dts b/target/linux/lantiq/files/arch/mips/boot/dts/lantiq/vr9_zyxel_p-2812hnu-f1.dts
index 74858ec118..8657e8b81d 100644
--- a/target/linux/lantiq/files/arch/mips/boot/dts/lantiq/vr9_zyxel_p-2812hnu-f1.dts
+++ b/target/linux/lantiq/files/arch/mips/boot/dts/lantiq/vr9_zyxel_p-2812hnu-f1.dts
@@ -47,6 +47,7 @@
 
 				nvmem-layout {
 					compatible = "u-boot,env";
+					env-size = <0x2000>;
 
 					macaddr_uboot_ethaddr: ethaddr {
 						#nvmem-cell-cells = <1>;