diff --git a/src/arch/arduino-nano/Kconfig b/src/arch/arduino-nano/Kconfig
index 39de647448a269c9faab2f2fdd9d99ce93db8493..638ec1df04425b0797a098669823e855c0e13ee7 100644
--- a/src/arch/arduino-nano/Kconfig
+++ b/src/arch/arduino-nano/Kconfig
@@ -22,9 +22,16 @@ config arch_arduino_nano_driver_timer
 bool "Timer with Interrupts"
 select meta_driver_timer
 
+choice arch_arduino_nano_cpu
+bool "CPU Type"
+
 config arch_arduino_nano_mega168
-bool "Cheap Hardware (ATMega168)"
-default n
+bool "ATMega168"
+
+config arch_arduino_nano_mega328
+bool "ATMega328"
+
+endchoice
 
 choice arch_arduino_nano_timer1