diff --git a/conf/machine/include/nanopi-m4.inc b/conf/machine/include/nanopi-m4.inc
index 3870b51..b8e1db1 100644
--- a/conf/machine/include/nanopi-m4.inc
+++ b/conf/machine/include/nanopi-m4.inc
@@ -5,5 +5,4 @@ require conf/machine/include/rk3399.inc
 
 MACHINE_FEATURES += "usbhost serial"
 
-KMACHINE = "nanopi-m4"
 KERNEL_DEVICETREE = "rockchip/rk3399-nanopi-m4.dtb"