diff --git a/configs/pengwyn_defconfig b/configs/pengwyn_defconfig
index b6f5e7d..4bb6245 100644
--- a/configs/pengwyn_defconfig
+++ b/configs/pengwyn_defconfig
@@ -48,6 +48,8 @@
 CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_CMD_MTDPARTS=y
+CONFIG_MTDIDS_DEFAULT="nand0=omap2-nand.0"
+CONFIG_MTDPARTS_DEFAULT="mtdparts=omap2-nand.0:512k(SPL),512k(SPL.backup1),512k(SPL.backup2),512k(SPL.backup3),1536k(u-boot),512k(u-boot-spl-os),512k(u-boot-env),5m(kernel),-(rootfs)"
 CONFIG_CMD_DIAG=y
 CONFIG_ISO_PARTITION=y
 CONFIG_EFI_PARTITION=y