diff --git a/target/linux/lantiq/files/arch/mips/boot/dts/lantiq/ar9_netgear_dgn3500.dtsi b/target/linux/lantiq/files/arch/mips/boot/dts/lantiq/ar9_netgear_dgn3500.dtsi
index dc8bc08331..658ef9681a 100644
--- a/target/linux/lantiq/files/arch/mips/boot/dts/lantiq/ar9_netgear_dgn3500.dtsi
+++ b/target/linux/lantiq/files/arch/mips/boot/dts/lantiq/ar9_netgear_dgn3500.dtsi
@@ -177,6 +177,7 @@
 
 				nvmem-layout {
 					compatible = "u-boot,env";
+					env-size = <0x1000>;
 
 					macaddr_uboot_ethaddr: ethaddr {
 						#nvmem-cell-cells = <1>;