diff --git a/configs/r8a7795_salvator-x_defconfig b/configs/r8a7795_salvator-x_defconfig
index f037d20..62b16b7 100644
--- a/configs/r8a7795_salvator-x_defconfig
+++ b/configs/r8a7795_salvator-x_defconfig
@@ -5,6 +5,7 @@
 CONFIG_TARGET_SALVATOR_X=y
 CONFIG_DEFAULT_DEVICE_TREE="r8a7795-salvator-x"
 CONFIG_SMBIOS_PRODUCT_NAME=""
+# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="console=ttySC0,115200 rw root=/dev/nfs nfsroot=192.168.0.1:/export/rfs ip=192.168.0.20"
 CONFIG_DEFAULT_FDT_FILE="r8a7795-salvator-x.dtb"
diff --git a/configs/r8a7795_ulcb_defconfig b/configs/r8a7795_ulcb_defconfig
index 42913df..a3dba70 100644
--- a/configs/r8a7795_ulcb_defconfig
+++ b/configs/r8a7795_ulcb_defconfig
@@ -5,6 +5,7 @@
 CONFIG_TARGET_ULCB=y
 CONFIG_DEFAULT_DEVICE_TREE="r8a7795-h3ulcb"
 CONFIG_SMBIOS_PRODUCT_NAME=""
+# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="console=ttySC0,115200 rw root=/dev/nfs nfsroot=192.168.0.1:/export/rfs ip=192.168.0.20"
 CONFIG_DEFAULT_FDT_FILE="r8a7795-h3ulcb.dtb"
diff --git a/configs/r8a7796_salvator-x_defconfig b/configs/r8a7796_salvator-x_defconfig
index d9af5f3..aa231b6 100644
--- a/configs/r8a7796_salvator-x_defconfig
+++ b/configs/r8a7796_salvator-x_defconfig
@@ -6,6 +6,7 @@
 CONFIG_TARGET_SALVATOR_X=y
 CONFIG_DEFAULT_DEVICE_TREE="r8a7796-salvator-x"
 CONFIG_SMBIOS_PRODUCT_NAME=""
+# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="console=ttySC0,115200 rw root=/dev/nfs nfsroot=192.168.0.1:/export/rfs ip=192.168.0.20"
 CONFIG_DEFAULT_FDT_FILE="r8a7796-salvator-x.dtb"
diff --git a/configs/r8a7796_ulcb_defconfig b/configs/r8a7796_ulcb_defconfig
index e5f5606..f222a68 100644
--- a/configs/r8a7796_ulcb_defconfig
+++ b/configs/r8a7796_ulcb_defconfig
@@ -6,6 +6,7 @@
 CONFIG_TARGET_ULCB=y
 CONFIG_DEFAULT_DEVICE_TREE="r8a7796-m3ulcb"
 CONFIG_SMBIOS_PRODUCT_NAME=""
+# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="console=ttySC0,115200 rw root=/dev/nfs nfsroot=192.168.0.1:/export/rfs ip=192.168.0.20"
 CONFIG_DEFAULT_FDT_FILE="r8a7796-m3ulcb.dtb"