diff --git a/configs/aarch64_defconfig b/configs/aarch64_defconfig
index 22f0e9b7..01dc087a 100644
--- a/configs/aarch64_defconfig
+++ b/configs/aarch64_defconfig
@@ -23,7 +23,7 @@ BR2_ROOTFS_USERS_TABLES="$(BR2_EXTERNAL_INFIX_PATH)/board/common/users"
 BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_INFIX_PATH)/board/common/rootfs"
 BR2_ROOTFS_POST_BUILD_SCRIPT="$(BR2_EXTERNAL_INFIX_PATH)/board/common/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="$(BR2_EXTERNAL_INFIX_PATH)/board/common/post-image.sh"
-BR2_ROOTFS_POST_SCRIPT_ARGS="$(SIGN_KEY)"
+BR2_ROOTFS_POST_SCRIPT_ARGS="$(BR2_ARCH) $(SIGN_KEY)"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.19.17"