diff --git a/buildroot-external/board/tinker/uboot-boot.sh b/buildroot-external/board/tinker/uboot-boot.sh
index f8497a7d0..dc8b0d179 100644
--- a/buildroot-external/board/tinker/uboot-boot.sh
+++ b/buildroot-external/board/tinker/uboot-boot.sh
@@ -10,7 +10,7 @@ setenv bootargs_a "root=PARTUUID=8d3d53e3-6d49-4c38-8349-aff6859e82fd rootfstype
 setenv bootargs_b "root=PARTUUID=a3ec664e-32ce-4665-95ea-7ae90ce9aa20 rootfstype=squashfs ro"
 
 # Load extraargs
-fileenv mmc 1:1 ${fdt_addr_r} cmdline.txt cmdline
+fileenv mmc 1:1 ${ramdisk_addr_r} cmdline.txt cmdline
 
 # Load device tree
 fatload mmc 1:1 ${fdt_addr_r} rk3288-tinker.dtb