diff --git a/configs/am335x_guardian_defconfig b/configs/am335x_guardian_defconfig
index 8eedcbd64a..baa0d161d0 100644
--- a/configs/am335x_guardian_defconfig
+++ b/configs/am335x_guardian_defconfig
@@ -87,6 +87,7 @@ CONFIG_SYS_NAND_U_BOOT_LOCATIONS=y
 CONFIG_SYS_NAND_U_BOOT_OFFS=0x100000
 CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND=0x200000
 CONFIG_MTD_UBI_FASTMAP=y
+CONFIG_MTD_UBI_FASTMAP_AUTOCONVERT=1
 CONFIG_PHYLIB=y
 CONFIG_DM_ETH=y
 CONFIG_PHY=y