diff --git a/configs/funkey_defconfig b/configs/funkey_defconfig
index e14a527..b91c88a 100644
--- a/configs/funkey_defconfig
+++ b/configs/funkey_defconfig
@@ -12,6 +12,7 @@ BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"
 BR2_TARGET_GENERIC_GETTY_BAUDRATE_115200=y
 BR2_ROOTFS_USERS_TABLES="$(BR2_EXTERNAL_FUNKEY_PATH)/board/funkey/users_table.txt"
 BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_FUNKEY_PATH)/board/funkey/rootfs-overlay"
+BR2_ROOTFS_POST_BUILD_SCRIPT="$(BR2_EXTERNAL_FUNKEY_PATH)/board/funkey/post-build.sh"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c $(BR2_EXTERNAL_FUNKEY_PATH)/board/funkey/genimage.cfg"
 BR2_LINUX_KERNEL=y