diff --git a/target/linux/ar71xx/nand/config-default b/target/linux/ar71xx/nand/config-default
index f558df36fc..5ba1486aef 100644
--- a/target/linux/ar71xx/nand/config-default
+++ b/target/linux/ar71xx/nand/config-default
@@ -1,3 +1,6 @@
+CONFIG_CMDLINE="rootfstype=yaffs noinitrd"
+# CONFIG_JFFS2_CMODE_PRIORITY is not set
+# CONFIG_JFFS2_FS is not set
 CONFIG_MDIO_BITBANG=y
 CONFIG_MDIO_GPIO=y
 CONFIG_MTD_NAND=y
@@ -5,8 +8,10 @@ CONFIG_MTD_NAND_ECC=y
 CONFIG_MTD_NAND_RB4XX=y
 CONFIG_MTD_NAND_RB750=y
 # CONFIG_MTD_SM_COMMON is not set
+# CONFIG_OVERLAYFS_FS is not set
 CONFIG_SPI_RB4XX=y
 CONFIG_SPI_RB4XX_CPLD=y
+# CONFIG_SQUASHFS is not set
 CONFIG_YAFFS_9BYTE_TAGS=y
 CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED=y
 CONFIG_YAFFS_AUTO_YAFFS2=y