diff --git a/sys/boot/fdt/dts/arm/ufw.dts b/sys/boot/fdt/dts/arm/ufw.dts
index a2de3abbb92f..8b731a1a9d29 100644
--- a/sys/boot/fdt/dts/arm/ufw.dts
+++ b/sys/boot/fdt/dts/arm/ufw.dts
@@ -278,6 +278,7 @@
 	pinctrl-0 = <&mmc1_pins>;
 	bus-width = <4>;
 	non-removable;
+	wp-disable;
 	status = "okay";
 };