diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index 129d47bcc5fc8d1b9d0ef0e087bbf36cee1336be..9a92c072a485def0b2730340503d1984d5a6dc1d 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -132,7 +132,7 @@ config SUNXI_RSB
 	  and AC100/AC200 ICs.
 
 config UNIPHIER_SYSTEM_BUS
-	bool "UniPhier System Bus driver"
+	tristate "UniPhier System Bus driver"
 	depends on ARCH_UNIPHIER && OF
 	default y
 	help