diff --git a/board/micronas/vct/Kconfig b/board/micronas/vct/Kconfig
index 288a1ae..c518079 100644
--- a/board/micronas/vct/Kconfig
+++ b/board/micronas/vct/Kconfig
@@ -13,6 +13,7 @@
 
 choice
 	prompt "Board variant"
+	optional
 
 config VCT_PLATINUM
 	bool "Enable VCT_PLATINUM"