diff --git a/conf/evalsoc/linux_rv64imac_defconfig b/conf/evalsoc/linux_rv64imac_defconfig
index aa466c2..9e51e53 100644
--- a/conf/evalsoc/linux_rv64imac_defconfig
+++ b/conf/evalsoc/linux_rv64imac_defconfig
@@ -12,6 +12,7 @@ CONFIG_BLK_DEV_INITRD=y
 # CONFIG_RD_LZO is not set
 CONFIG_EXPERT=y
 # CONFIG_KALLSYMS is not set
+CONFIG_NONPORTABLE=y
 CONFIG_SMP=y
 CONFIG_HOTPLUG_CPU=y
 CONFIG_HZ_100=y
diff --git a/conf/evalsoc/linux_rv64imafdc_defconfig b/conf/evalsoc/linux_rv64imafdc_defconfig
index aa466c2..9e51e53 100644
--- a/conf/evalsoc/linux_rv64imafdc_defconfig
+++ b/conf/evalsoc/linux_rv64imafdc_defconfig
@@ -12,6 +12,7 @@ CONFIG_BLK_DEV_INITRD=y
 # CONFIG_RD_LZO is not set
 CONFIG_EXPERT=y
 # CONFIG_KALLSYMS is not set
+CONFIG_NONPORTABLE=y
 CONFIG_SMP=y
 CONFIG_HOTPLUG_CPU=y
 CONFIG_HZ_100=y