diff --git a/configs/am335x_nmhw21_defconfig b/configs/am335x_nmhw21_defconfig
index d798c71886..c4f100227e 100644
--- a/configs/am335x_nmhw21_defconfig
+++ b/configs/am335x_nmhw21_defconfig
@@ -36,6 +36,7 @@ CONFIG_G_DNL_MANUFACTURER="Texas Instruments"
 CONFIG_G_DNL_VENDOR_NUM=0x0451
 CONFIG_G_DNL_PRODUCT_NUM=0xd022
 CONFIG_OF_LIBFDT=y
+CONFIG_OF_LIBFDT_OVERLAY=y
 # CONFIG_BOOTP_PXE_CLIENTARCH is not set
 # CONFIG_CMD_PXE is not set
 # CONFIG_CMD_BOOTEFI is not set