diff --git a/arch/powerpc/cpu/mpc8260/Kconfig b/arch/powerpc/cpu/mpc8260/Kconfig
index 55941c8..e93732d 100644
--- a/arch/powerpc/cpu/mpc8260/Kconfig
+++ b/arch/powerpc/cpu/mpc8260/Kconfig
@@ -6,6 +6,7 @@
 
 choice
 	prompt "Target select"
+	optional
 
 config TARGET_KM82XX
 	bool "Support km82xx"