diff --git a/rk3288/BoardConfig.mk b/rk3288/BoardConfig.mk
index 81cd411..81e3f35 100755
--- a/rk3288/BoardConfig.mk
+++ b/rk3288/BoardConfig.mk
@@ -28,6 +28,8 @@ export RK_JOBS=12
 export RK_TARGET_PRODUCT=rk3288
 # Set rootfs type, including ext2 ext4 squashfs
 export RK_ROOTFS_TYPE=ext4
+# yocto machine
+export RK_YOCTO_MACHINE=rockchip-rk3308-evb
 # rootfs image path
 export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 # Set oem partition type, including ext2 squashfs
diff --git a/rk3288/BoardConfig_8846.mk b/rk3288/BoardConfig_8846.mk
index c697535..3c4431b 100755
--- a/rk3288/BoardConfig_8846.mk
+++ b/rk3288/BoardConfig_8846.mk
@@ -28,6 +28,8 @@ export RK_JOBS=12
 export RK_TARGET_PRODUCT=rk3288
 # Set rootfs type, including ext2 ext4 squashfs
 export RK_ROOTFS_TYPE=ext4
+# yocto machine
+export RK_YOCTO_MACHINE=rockchip-rk3308-evb-act8846
 # rootfs image path
 export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 # Set oem partition type, including ext2 squashfs