diff --git a/rk3326/BoardConfig_robot32.mk b/rk3326/BoardConfig_robot32.mk
index db7a476..6596898 100755
--- a/rk3326/BoardConfig_robot32.mk
+++ b/rk3326/BoardConfig_robot32.mk
@@ -4,8 +4,6 @@
 export RK_ARCH=arm64
 # Uboot defconfig
 export RK_UBOOT_DEFCONFIG=evb-rk3326
-# use robot for trust
-export RK_ROBOT=ROBOT
 # Kernel defconfig
 export RK_KERNEL_DEFCONFIG=rk3326_linux_defconfig
 # Kernel dts
diff --git a/rk3326/BoardConfig_robot64.mk b/rk3326/BoardConfig_robot64.mk
index ecba901..aa1ceba 100755
--- a/rk3326/BoardConfig_robot64.mk
+++ b/rk3326/BoardConfig_robot64.mk
@@ -4,8 +4,6 @@
 export RK_ARCH=arm64
 # Uboot defconfig
 export RK_UBOOT_DEFCONFIG=evb-rk3326
-# use robot for trust
-export RK_ROBOT=ROBOT
 # Kernel defconfig
 export RK_KERNEL_DEFCONFIG=rk3326_linux_robot_defconfig
 # Kernel dts
diff --git a/rk3326/BoardConfig_robot64_no_gpu.mk b/rk3326/BoardConfig_robot64_no_gpu.mk
index 681438c..42fc975 100755
--- a/rk3326/BoardConfig_robot64_no_gpu.mk
+++ b/rk3326/BoardConfig_robot64_no_gpu.mk
@@ -4,8 +4,6 @@
 export RK_ARCH=arm64
 # Uboot defconfig
 export RK_UBOOT_DEFCONFIG=evb-rk3326
-# use robot for trust
-export RK_ROBOT=ROBOT
 # Kernel defconfig
 export RK_KERNEL_DEFCONFIG=rk3326_linux_robot_no_gpu_defconfig
 # Kernel dts