diff --git a/configs/uniphier_ld20_defconfig b/configs/uniphier_ld20_defconfig
index 3e802d3..449093a 100644
--- a/configs/uniphier_ld20_defconfig
+++ b/configs/uniphier_ld20_defconfig
@@ -6,6 +6,7 @@
 CONFIG_MICRO_SUPPORT_CARD=y
 CONFIG_SYS_TEXT_BASE=0x84000000
 CONFIG_DEFAULT_DEVICE_TREE="uniphier-ld20-ref"
+# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
 CONFIG_SPL_NOR_SUPPORT=y
 CONFIG_HUSH_PARSER=y
 # CONFIG_CMD_XIMG is not set