diff --git a/configs/andes_ae350_45_defconfig b/configs/andes_ae350_45_defconfig
index 998276635b..ef29ab6454 100644
--- a/configs/andes_ae350_45_defconfig
+++ b/configs/andes_ae350_45_defconfig
@@ -38,7 +38,6 @@ BR2_TARGET_UBOOT_NEEDS_OPENSBI=y
 BR2_TARGET_UBOOT_FORMAT_CUSTOM=y
 BR2_TARGET_UBOOT_FORMAT_CUSTOM_NAME="u-boot.itb"
 BR2_TARGET_UBOOT_SPL=y
-BR2_TARGET_UBOOT_CUSTOM_MAKEOPTS="ARCH_FLAGS=-march=rv64imafdc"
 BR2_PACKAGE_HOST_DOSFSTOOLS=y
 BR2_PACKAGE_HOST_GENIMAGE=y
 BR2_PACKAGE_HOST_MTOOLS=y